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Overview NVMe SSD-drive Transcend MTE220S: cheap – not so bad

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It just so happens that the manufacturers of SSDs, which until now has not got its own teams of controllers, but do not want to overlook the market for SSD enthusiasts, no particular choice today. Suitable option for them, allowing to organize the Assembly really productive drives with the NVMe interface that offers only one company is Silicon Motion, which is ready to deliver integrated solutions from your controller and firmware ready for everyone. Public base IC to build NVMe drives and there are other firms, for example, the same Phison or Realtek, but that Silicon Motion has taken the lead in this area, offering partners not only more functional, but much more fast acting solutions.

At the same time, among the huge variety of NVMe drives based on controllers Silicon Motion, of interest to enthusiasts can imagine not all models. This company produces a wide range of microchips with a fundamentally different level of performance, but performance worthy of an SSD for advanced or maximum configuration, can provide only selected platforms. In particular, last year we spoke about the controller SM2262: by the standards of 2018, he really looked very attractive, enabling drives based on it act on an equal footing with the best consumer NVMe SSD manufacturers of the first echelon, including Samsung, Western Digital and Intel.

But this year the situation has changed, as leading manufacturers have updated their mass top-level model. In response, Silicon Motion began to offer our partners an improved version of last year’s controller, SM2262EN, which also promises increase in performance – primarily in recording speed. It turns out, that storage devices based on this chip should be interested buyers who expect to get a more modern and fast NVMe drive, but do not want to overpay for the possession product A brand.

Until recently, the new controller SM2262EN used in their products is not so many manufacturers. In fact, the choice boiled down to two options: ADATA XPG SX8200 Pro and HP EX950. But now appeared the third storage device based on this chip – it has mastered the production of the company Transcend. With this new product, called Transcend MTE220S, we’re going to explore in this review.

Inputs to this familiarity are. HP EX950 not available in Russia, and ADATA XPG SX8200 Pro in our recent testing nothing trumps not demonstrated, suggesting that the performance of drives on the last controller SM2262. And this means that, despite the emergence of new versions of the Silicon Image controller, no NVMe SSD that would be able to compete with fresh 970 Samsung EVO Plus , we have not yet seen. Will Transcend MTE220S more interesting in comparison with ADATA XPG SX8200 Pro version, we are going to find out in this review. But it should be emphasized that, even if this SSD and not flash high-speed parameters, it can still be quite interesting. Because Transcend was going to sell it at a surprisingly low price — at least low for a full drive PCI Express 3.0 x4 DRAM buffer and a three-dimensional TLC-memory.

#Specifications

Details about what is a controller SM2262EN, we talked when you met ADATA XPG SX8200 Pro. On the technical side, this chip is built on two ARM Cortex cores, uses an eight-channel interface for controlling the flash memory has a DDR3/DDR4 interface for buffer and supports the bus PCI Express 3.0 x4 NVM Express Protocol 1.3. In other words, it is a modern and complete solution for NVMe drives, which also has a very good performance theoretical performance and supports advanced error correction techniques.

Initially, the controller SM2262EN was submitted in August of 2017, along with the “simple” SM2262, however, was presented as his “advanced” version, delivery of which was to begin later. Apparently, Silicon Motion was going to hold it up to the market introduction of the 96-layer TLC 3D NAND then to offer accelerated comprehensive solutions with a denser flash memory. However, this plan fell through due to changing market trends: NAND chips began to fall in price rapidly, and manufacturers of memory decided to delay the introduction of new technologies. The result is Silicon Motion got tired of waiting and released SM2262EN as an update to SM2262 as part of the platform, oriented to work with a 64-layer TLC 3D NAND.

In this case, according to the formal specifications, version platform controller SM2262EN still promises performance improvements of up to 9% sequential read, up to 58 % – sequential writes, up to 14 % – with random reads, and up to 40% at random writes. But if to believe these numbers with great caution. The developers say directly – no modifications in the hardware structure SM2262EN implies, it uses exactly the same architecture as conventional SM2262. All the benefit is based on changes in the software part: platform with a new controller uses more sophisticated algorithms to record and SLC-caching. In other words, we are talking about some attempt to cut corners, not that the engineers managed to make a breakthrough in the mechanisms work.

What this means in practice, we have seen, when tested ADATA XPG SX8200 Pro based controller SM2262EN. This drive was faster than its predecessor the chip SM2262 only in benchmarks, but offered no noticeable improvement in real performance. However, Transcend MTE220S the story is somewhat different. This drive has no close relatives in the lineup, and to Transcend this brand new model. In light of the fact that early in the lineup of this manufacturer was only NVMe SSD entry-level passport characteristics MTE220S look very impressive.

Manufacturer Transcend
Series MTE220S
Model number TS256GMTE220S TS512GMTE220S TS1TMTE220S
Form factor M. 2 2280
Interface PCI Express 3.0 x4 NVMe 1.3
Capacity, GB 256 512 1024
Configuration
Memory chips: type, interface, process technology, manufacturer Toshiba 64-layer 256-Gbit 3D TLC NAND
Controller SMI SM2262EN
Buffer: type, volume DDR3-1866,
256 MB
DDR3-1866,
512 MB
DDR3-1866,
1024 MB
Performance
Max. sustained sequential read, MB/s 3500 3500 3500
Max. sustained sequential write speed, MB/s 1100 2100 2800
Max. speed of random read (blocks 4 KB) IOPS 210 000 210 000 360 000
Max. speed random write (blocks 4 KB) IOPS 290 000 310 000 425 000
Physical characteristics
Power consumption: inaction/read-write, W N/a
MTBF (mean time between failures), million h 1,5
Resource record, TB 260 400 800
Dimensions: Ghvhg, mm 80 × 22 × 3,5
Weight, g 8
Warranty period, years 5

Interestingly, the claimed performance Transcend MTE220S slightly below those speeds promised for your similar drive based controller SM2262EN ADATA. Apparently this is due to the fact that although MTE220S and uses the same hardware and software platform, its design differs from the reference. For your drive, Transcend has designed its own printed circuit Board, where in order to reduce abandoned the use of 32-bit DRAM interface buffer in favor of more cost-effective, 16-bit connections. The result is lower top speed of random read and write, and this is especially noticeable in the version of the drive capacity of 512 GB.

However, SLC caching to Transcend MTE220S works exactly the same as other drives with the controller SM2262EN. The cache uses a dynamic scheme when one bit in a crash mode translates the part of the TLC memory from the underlying array. The cache size is chosen so that in the SLC-mode worked about half of the free flash memory. Thus, high speed MTE220S you can record the amount of data, the size of approximately a sixth of the available space on the SSD, then the speed will be significantly reduced.

This can be illustrated by the following graph, which shows how the performance of a continuous sequential write to blank Transcend MTE220S a capacity of 512 GB.

In accelerated mode, when the recording is performed in the SLC-mode, a 512-Gigabyte version MTE220S provides the performance level of 1.9 GB/s In TLC mode, the array of flash memory runs significantly slower, and after the exhaustion of free space in the SLC cache, the speed is reduced to 460 MB/s. On the chart is visible and the third option is speed – 275 Mbps. To the point performance when sequential write is reduced in the case when the free flash memory is longer, and in order to put some additional data the controller you first need to translate the cell is used for SLC-cache in normal TLC mode. The result is that the average speed of continuous recording on a Transcend 512 GB MTE220S “from the beginning to the end” is about 410 MB/s, and to fill up this drive data is necessary to spend at least 21 minutes. It is not too optimistic: for example, the same 970 Samsung EVO Plus you can completely clog the eyeballs in just 10 minutes.

While SLC-cache Transcend MTE220S characterized by the same unique feature we found in ADATA XPG SX8200 Pro. Data is transferred in conventional memory is not immediately, and only when it is filled more than three quarters. This allows to increase the speed of reading when referring to files that were recorded just. This option makes little sense in real-world use of the SSD, but it helps a lot to drive in synthetic benchmarks, which are practicing scenarios of the “record — reading”.

How this looks in practice can be assessed according to the following schedule speed random reads when accessing the file immediately after you created it when following this file in the SSD was recorded some amount of information.

Here very clearly seen the moment when the controller moves the test file from the SLC cache to the main flash memory, because the speed melkoplodnogo reading at this point drops about 10 %. With such a reduced speed and will have the business users in the vast majority of cases, since there are no reverse algorithms move data from TLC memory in the SLC cache in the firmware Transcend MTE220S not provided, and to stay in SLC-cache files just in case, if the drive is in the process of operation remains free more than 90 percent.

In other words, the work of SLC-cache Transcend MTE220S little different from other drives based on controller SM2262EN. But this does not mean that it is similar to ADATA XPG SX8200 Pro in all. The Transcend offers a significant advantage of a different order – a higher allowed by the terms of the guarantee the amounts of rewriting. Without loss of drive can be completely overwritten data 800 times, and the version of 256 GB is more than 1000 times. Such parameters of the declared resources allow to hope for MTE220S manufacturer of purchased the flash memory of the higher gradation of quality, and this means that the actual reliability of the drive can make even those users who still belong to TLC 3D NAND with a large grain of salt.

#Appearance and internal structure

For a detailed acquaintance by tradition the model has been chosen to Transcend MTE220S of 512 GB. No surprises its good looks, it is not presented, it is the usual storage form factor M. 2 2280, which operates via the bus PCI Express 3.0 x4, and supports the NVM Express Protocol version 1.3. However, the type of packaging and delivery MTE220S evoke stable Association with cheap consumer goods. Even budget UN-buffered SSD MTE110S the company sold in a full box, and the novelty is positioned as a solution to a higher level, were Packed in blister packs, in which, in addition to the M. 2 card storage, no nothing. This is all very reminiscent of the kind available on the market microSD card, and obviously serves the purpose of reducing overhead costs. However, hardly anyone still chooses SSD packing.

Not an impressive appearance and consider myself an SSD. In its design there are no radiators, and the sticker does not have a layer of heat-conducting foil. And in General Transcend MTE220S looks more like an OEM product, rather than as a solution for enthusiasts. Emphasizes this impression is PCB PCB is almost forgotten already green and purely utilitarian label, which has no signs of design, and contains only service information.

The layout of the Board MTE220S not be called model — it, apparently, Transcend the engineers have modified for their own needs. At least previously reviewed the ADATA XPG SX8200 Pro despite using the same hardware platform, looked quite different. However, the bilateral arrangement of the components of the new Transcend preserved, therefore, for “low profile” slots M. 2, which occur in thin laptops, MTE220S may not be suitable.

 

An array of flash memory located on MTE220S 512GB scored four chips with their own marking Transcend. Know that within each of these circuits is four 256-Gigabit crystal 64-ply Micron memory TLC 3D NAND second generation. Transcend buys such a memory from Toshiba in the form of solid plates, but cutting, testing and packaging of silicon chips in the chip takes over, which allows to achieve additional production savings.

Attention should be paid and a chip DDR4-1866 SDRAM, next to the chip base controller SM2262EN. It serves as a buffer to store a copy of the table of address translation, but it is important here that in the drive there is only one such chip, manufactured by Samsung, with a capacity of 512 MB. We specially pay attention to it, as other SSD controller SM2262EN fast DRAM buffer typically consists of a pair of chips less than half volume. As a result, Transcend MTE220S work with DRAM buffer occurs via a 16-bit, not 32-bit bus, which in theory can hurt performance when melkoplodnyj operations. However, the influence of this factor should not be overestimated: a 32-bit bus for the RAM is a unique feature of the platform SM2262/SM2262EN, while the other controllers to use SSD DRAM buffer with 16-bit bus and absolutely do not suffer from this.

#Software

For service drives its own production the company produces special utility Transcend SSD Scope. It’s almost typical for software of this class, but some familiar features for some reason are not supported.

 

SSD Scope allows you to monitor the overall status of your drive and assess his health, referring to the telemetry S. M. A. R. T. utility available, simple tests of speed and also check the firmware version and its updates.

 

Also, the utility includes a tool to clone the contents of disks, which enables quick and painless to transfer the operating system and installed applications on freshly bought SSD. Plus, the SSD Scope is able to control the transmission to the drive the TRIM command.

 

For SATA SSD Scope may also offer validation of the array of flash memory for errors or performing a procedure “reliable cleaning” flash memory Secure Erase. But with Transcend MTE220S both of these functions for some reason do not work.

SOURCE

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Peripherals

Overview NVMe drive Silicon Power P34A80: reference Phison E12 and the new firmware

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Until recently, we too often took for related solid-state drives offered by companies from the second or third tier. This was due primarily to the fact that these products are too unpredictable in hardware platform: depending on what the chip manufacturer was able to purchase on the open market, today the particular model of drive could be used some components, and tomorrow – quite different. The producers usually do not consider it necessary to inform users about changes in product configuration nor on your website nor in the name or on the label. A result of doing the reviews of these SSD was kind of pointless and sometimes even harmful. It is written article threatened to lose its truthfulness at any time, and we could not even know.

But it has the ability to change, and in the case of drives with NVMe interface situation with the permanence of the hardware now looks much better. The fact that the main independent developers controllers, Phison and Silicon Motion, offer for progressive NVMe SSD relatively small number of platforms, and they clearly ranked according to the level of performance and price. Therefore, the space for throwing the producers of second and third tier are left, and their NVMe products receive a fixed and deterministic components. In other words, NVMe SSD, even produced the most savvy firms, no mess with the controllers and memory are not observed.

Besides familiarity with the products of manufacturers of the second-third tier has now acquired a distinct sense also for the reason that leading players in the SSD market have switched to using either completely new or highly customized versions of public modules. Therefore, the SSD supplied by smaller companies today have little in common with the production scale of the giants of Samsung, Western Digital, Intel, or Crucial. But their characteristics make them believe that the performance and reliability they do not yield to the suggestions of market leaders. That means they may deserve to be considered separately.

At the moment, independent developers controllers offer two fully ready to implement the platform for productive NVMe SSD interface PCI Express 3.0. First – SMI SM2262EN, and it is actively used in their drives, ADATA, HP, Kingston and Transcend. Second – Phison E12. This controller appeared a little later, but managed to gain wider popularity. It can be found in the products of Corsair, Gigabyte, Lite-On, Patriot, PNY, Seаgate, Silicon Power, Team Group and many other smaller firms. It is about the realization of this platform in the end products we will discuss in more detail today.

But before we get to the point of the story, it is necessary to clarify that the scheme of work Phison over the last few years have not changed. In fact, this company supplies to its partners, not the chip controllers and ready drives in the collection, and end-producers can only add to them radiators, marketing stickers and your own packaging. From this it follows that the fundamental difference between drives of different brands on the basis of Phison E12 does not exist: differences if there is, only in the exterior. Accordingly, testing one drive on this platform, we can summarize the obtained results and all related products.

In the laboratory 3DNews already visited one of the drives with this controller – the Gigabyte Aorus RGB NVMe M. 2 SSD, and he made a special impression. Nevertheless, we decided to give the platform Phison E12 second chance. The fact that the developers have improved the Phison firmware, and the effectiveness of the controller was to increase. To check, whether so it actually, we took another test NVMe SSD based on Phison E12 platform. They found Silicon Power P34A80.

#Specifications

So Silicon Power P34A80 – drive model, built on the controller PS5012-E12, the first chip Phison for NVMe SSD, which can be used where the user is interested in something else besides low prices. Engineers Taiwanese developer could not design some really productive solution, but with the E12 platform, it seems, something began to happen. At least on the website Phison controller PS5012-E12 promised linear speeds exceeding 3 GB/s, while the previous child of this developer, PS5008-E8, with difficulty squeezed only 1.6 and 1.1 GB/s for read and write respectively.

Since the new Phison chip is noticeably faster than previous solutions, it is no surprise that domestic architecture he finally approached the modern controllers for productive NVMe drives other developers. So, PS5012-E12 is based on a dual-core ARM processor with a frequency of 667 MHz, offers eight channels to connect flash memory, supports four lines PCI Express 3.0 to communicate with the system and provided with DDR4/DDR3-interface to implement the internal buffer. The actual chip supports standard NVMe 1.3, and in addition, it implements error correction based on LDPC codes, the cryptographic algorithm AES-256 and a number of proprietary technologies Phison to improve the reliability of data storage. For the production of chips PS5012-E12 meets TSMC, is used to manufacture 28-nm process technology.

In Silicon Power P34A80 this controller works in tandem with flash memory Toshiba, which is quite natural, because between the Phison and Toshiba has a long and close relationship. In this case, the memory array is composed of 64-layer crystals BiCS3 (TLC 3D NAND), what makes considering the drive to any other NVMe SSD based on Phison E12 platform.

Allocates the same Silicon Power P34A80 newer firmware version 12.3: all the same drives that wound up in our hands before, used the firmware versions 12.1 or 12.2. Of course, that doesn’t make this SSD is unique. Actually Phison started to distribute the firmware 12.3 among its partners in the middle of summer, but the transfer of serial products to a newer firmware takes time. Silicon Power has been able to resolve this issue more quickly, but owners of other drives based on the controller Phison PS5012-E12 can preupgrades independently online, it is easy to find information on how to do it.

In passport characteristics of the Silicon Power P34A80 foolish to look for any surprises, everything is exactly the same as in the other SSD on the platform Phison E12 — the only difference is that the speed performance of their product manufacturer to the max caught up with fog.

Manufacturer Silicon Power
Series PCIe Gen3x4 P34A80
Model number SP256GB P34A80M28 SP512GB P34A80M28 SP001TB P34A80M28 SP002TB P34A80M28
Form factor M. 2 2280
Interface PCI Express 3.0 x4 NVMe 1.3
Capacity, GB 256 512 1024 2048
Configuration
Memory chips: type, interface, process technology, manufacturer Toshiba 64-layer 256-Gbit 3D-NAND TLC (BiCS3)
Controller Phison PS5012-E12
Buffer: type, volume DDR3L-1600,
256 MB
DDR3L-1600,
256 MB
DDR4-2400,
1024 MB
DDR4-2400,
2048 MB
Performance
Max. sustained sequential read, MB/s Up to 3400 MB/s
Max. sustained sequential write speed, MB/s Up to 3000 MB/s
Max. speed of random read (blocks 4 KB) IOPS N/a
Max. speed random write (blocks 4 KB) IOPS N/a
Physical characteristics
Power consumption: inaction/read-write, W N/a
MTBF (mean time between failures), million h 2,0
Resource record, TB N/a
Dimensions: D × H × D, mm 22 × 80 × 2,38
Weight, g 8
Warranty period, years 5

To remedy the lack of information about the performance Silicon Power P34A80 possible, based on the characteristics of the controller. Phison promises that drives the platform base E12 versions the maximum amount can reach up to 600 thousand IOPS, and polterabayta modification can provide 360 thousand IOPS when reading and 500 thousand IOPS when writing. All this can be described as a decent enough level of performance: in the spec the same 970 Samsung EVO Plus show up very similar numbers.

However, when we are talking about NVMe SSD built on the basis of an independent Taiwanese developers always need to keep in mind that their characteristics are a lot of places for additions, forgeries and other fraud. Beautiful the promised number, as a rule, can only be obtained under special conditions by special tests, but in reality the performance is lower. Phison such tricks is famous for a long time, and solutions on the platform Phison E12 exception to their rules did not.

First, it applied the technology SLC-cache, accelerating the entry of small amounts of data. Therefore, high speed recording from Silicon Power P34A80 can be observed only in the case when the overall amount of recorded data is not more than 5% of the total capacity of the SSD. SLC-cache in this case is static, its size is about 24 GB on each 256 GB of storage capacity, and indicated in the specifications the rate of linear and random writes are achievable only within this region.

All this is easy to illustrate the graph, which shows the speed of continuous serial write on a blank Silicon Power P34A80 a capacity of 512 GB.

The speed entries in the SLC cache reaches 2.0 GB/s, but this performance is very long, on the main array of flash memory write speed is only about 580 MB/s. And in fact it is a relatively low performance for the drive on the basis of BiCS3 memory. The same WD Black SN750 with the same flash in the same configuration shows a remarkably high speed direct writes to the TLC memory. But in fairness it should be noted that some work to improve performance recording in IOS 12.3 is still carried: the size of the SLC cache at Silicon Power P34A80 now twice.

The second feature of the platform Phison E12 is that the SLC cache is activated not only when writing but also when reading. But the algorithm of its operation in this case is very primitive and at the same time cheat. About any pre-sample data it is not just the information that ends up in the SLC cache, it is transferred from the main array in flash memory immediately, but with a small time delay. This directly affects the performance in the tests, since the vast majority of benchmarks on the SSD first, write a test file and then immediately turns to him to measure the speed, thus inflated results. In actual use any disk read operations are performed from files recorded not only that, the speed in this case will be much lower.

Illustrate how this trick works, it is also very easy. The following graph shows the speed of random melkoplodnogo read data from a file on P34A80 Silicon Power 512 GB as immediately after creation, and after this the SSD was recorded some more information.

When the fresh test file is excluded from the SLC cache and then writing the additional 12 GB of data, the read speed of it is reduced by about a quarter. This means that the standard benchmarks that measure the performance by using calls to the file you just created will show for Silicon Power P34A80 significantly higher than it will give real work.

The model range of Silicon Power P34A80 formally includes four versions with a capacity from 256 GB to 2 TB, and they all really commercially available. Besides, they are relatively inexpensive — such a drive may attract those buyers who do not want to spend money on Samsung 970 970 EVO and the EVO Plus or WD Black SN750. While P34A80 looks like quite a budget option: Silicon Power gives him quite a full five-year warranty, not limiting the user in the amount of the rewritable information.

#Exterior and interior devices

For testing, we took a sample of Silicon Power P34A80 a capacity of 512 GB. Drive his performance did not surprise: it is a charge in the standard M. 2 form factor 2280 with a key of type M in stab connector that uses to communicate with the system bus PCI Express 3.0 x4.

Moreover, cost Silicon Power P34A80 has a full reference design and the blue color of the PCB is an indirect indication that she made at the company PTI under the direct control Phison. And this in turn means that to seek out some unique features drive Silicon Power is completely useless, it is identical analogous solutions Corsair, Patriot, Seagate, and other drives, built on the platform of Phison E12.

Many vendors NVMe drives on the basis of the chip Phison PS5012-E12 add to their products some or other cooling system. Silicon Power has decided to dispense with such frills, but the sticker with the marking on P34A80 has a thin layer of aluminum foil that is likely to contribute to the heat sink.

On the sticker label is not too much information: is given only to the article, SSD capacity and serial number. No information about date of production or filled at the factory firmware on it.

 

Board Silicon Power P34A80 512 GB has a one-way design, but this applies only to drives with a capacity of 256 and 512 GB is more capacious modifications are chips on both sides of the PCB.

The circuitry of the drive, in addition to the controller IC includes two chips of the flash memory chip and a DRAM buffer. Immediately it is worth noting that usually the SSD platform Phison E12 use DDR4 memory, but Silicon Power P34A80 512GB chosen the cheaper option – chip DDR3L-1600 SDRAM Nanya production, and half lower-than-usual volume – 256 MB.

But the flash memory in this drive is completely standard: it is a TCBBG55AIV chips, each of which is assembled of eight 256-Gigabit semiconductor crystals 64-layer TLC 3D NAND authorship Toshiba Packed by company PTI. This memory is a little worse chipsets with native Toshiba markings, as in this case, for the cutting and selection of crystals of the outside manufacturer, which has its own notions of acceptable for an SSD as flash memory. However, purebred memory Toshiba found only in more expensive products.

Capacity Silicon Power P34A80 512 GB after formatting the operating system 476 is “honest” GB.

#Software

Now, almost all SSD manufacturers offer a utility service that allows you to monitor the status of SSD and manage their work. At Silicon Power, this is the role utility of the SP ToolBox, however, from the point of view of functionality must be attributed to the number of unsuccessful examples of such programs: it is not able to practically nothing.

The only thing you can do with this program is to see General information about the SSD and access the S. M. A. R. T. telemetry. In other words, we can assume that no specialized tools and no.

SOURCE

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Peripherals

Overview NVMe drive Lexar NM610: return of the legend

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So, the reason for the appearance of this article on our website was the fact that in the Russian retail now you can meet solid state drives Lexar. Lexar is a legendary name in the market of memory cards, is familiar to many enthusiasts with experience: this company originated in the mid-nineties, and her best time is in the middle of the two thousandth. In 2004, Lexar entered into a partnership agreement with Kodak, and in the next few years formed the tandem offered truly outstanding at the time of the performance and capacity of memory card for use in digital cameras. Orientation it is on Lexar digital photography was for the company absolutely clear priority, and in this field she was able to achieve great success. Even the chief marketer of the company at the time was a professional photographer Jeff cable (Jeff Cable). Not surprisingly, Lexar had and still has enormous weight among the users, one way or another related to photography.

However, in 2017, the company Acer, which was owned by Lexar in 2006, decided to completely abandon retail sales of removable drives based on flash memory. The result is Lexar brand as an independent ceased to exist, and the products under this name disappeared from the market. But not for long. Literally within a month became useless for Dell Lexar assets, primarily at a popular and reputable brand, found a buyer. It was the company Longsys – visible Chinese ODM-manufacturer of solid state drives, and other built and flash memory media.

So Lexar brand has found a new life. Last year Longsys decided to try to enter retail market — and is now actively pursuing it to life, using the legendary brand. As a result, first products Lexar returned to the North American region, and then came to Russia.

Longsys Electronics Shenzhen Company is a large contract manufacturer, the main products of which are solid – state drives for data centers. The firm operates from the beginning of 2000-x years and has now grown to the point that became one of the leading SSD manufacturers in China. The company has a development center, which employs more than two hundred highly qualified engineers. And that this team is able to create interesting and original products, we are already convinced. For example, it Longsys released the first fully Chinese SSD, which uses components exclusively of local origin: the 64-layer flash memory YMTC and controller Goke GK2302.

Office Longsys

However, products under the Lexar brand, which Longsys offers on the international market is not as exotic products. The company decided to begin to return the distinguished brand to life through traditional products Lexar memory cards and USB flash drives. But also added to them and a wide range of affordable SSD, with a senior representative which we decided to meet today. Arrived in our laboratory model Lexar NM610 is the best SSD brand PCI Express 3.0 x4, which can be purchased at a very attractive price. In this article we will try to assess if this product be of interest to buyers and why he was compared to the majority of similar alternatives.

#Specifications

Won’t create intrigue where there is none. NVMe drive Lexar NM610, is not rare in our part of the beast, and it is typical and widespread solution, and not high-level. Producer reasonably considered that to start a life journey with some exotics can be dangerous, and therefore decided to enter the market by the well-trodden path, used by many Chinese companies. So Lexar NM610 is unbuffered NVMe storage device on the basis of well-proven Silicon Motion controller SM2263XT similar to numerous NVMe SSD, which is rife with Aliexpress. However, you need to understand that the difference NM610 from numerous conventionally-unnamed Chinese alternatives is that in this case the manufacturer provides a constant hardware configuration, a certain level of quality of the used flash memory and the normal three-year warranty which is valid in Russia.

Otherwise, everything is quite ordinary. An array of flash memory to Lexar NM610 collected from the TLC 3D NAND chips produced by Intel. Used 64-layer TLC 3D NAND devices of the second generation, which have a capacity of 256 GB and, as the results of previous trials, provide relatively good performance. These devices are combined into a four-band array, operated by the controller SM2263XT. He does not know how to work with the DRAM interface, and for that reason the Lexar NM610 no own dynamic memory to store “fast” copy of the table of address translation. But he supports HMB (Host Memory Buffer, the buffer on the host side), which allows to buffer the table in the computer memory and refer to it on the bus PCI Express 3.0 x4 SSD under consideration through which communicates with the main system.

As we already know, in the case of storage platform, Silicon Motion SM2263XT this whole scheme quite well manifest himself in the case, but only in Windows 10 operating system – in other OC technology HMB is not supported.

If we turn to our recent testing of terabyte NVMe SSD, it would appear that Lexar NM610 in its hardware configuration similar to AMD Radeon R5 NVMe SSD or Transcend MTE110S. However, in passport characteristics Lexar somehow appear a little more high performance.

Manufacturer Lexar
Series NM610
Model number LNM610-250RB LNM610-500RB LNM610-1TRB
Form factor M. 2 2280
Interface PCI Express 3.0 x4 NVMe 1.3
Capacity, GB 250 500 1000
Configuration
Memory chips: type, interface, process technology, manufacturer Intel 64-layer 256-Gbit 3D TLC NAND
Controller SMI SM2263XT
Buffer: type, volume No
Performance
Max. sustained sequential read, MB/s 2000 2100 2100
Max. sustained sequential write speed, MB/s 1200 1600 1600
Max. speed of random read (blocks 4 KB) IOPS 110 000 188 000 188 000
Max. speed random write (blocks 4 KB) IOPS 151 000 156 000 156 000
Physical characteristics
Power consumption: inaction/read-write, W N/a
MTBF (mean time between failures), million h 1,5
Resource record, TB 125 250 500
Dimensions: D × H × D, mm 80 × 22 × 2,25
Weight, g 9
Warranty period, years 3

Overall the specifications look quite typical for products of this class. It’s not NMe’s flagship SSD, and the budget solution with modern and advanced interface. Therefore, linear speed is limited by chetyrehkantnomu array of flash memory, and the lack of DRAM buffer has the latency and performance when random access. However, if you compare Lexar NM610 with suggestions from the same price category, its performance is quite outstanding. It stands out especially on indicators for the design of the resource: the manufacturer allows you to overwrite almost half of the total capacity of the SSD (more specifically, 46 %) daily for a three-year warranty period. Typically, such a vitality promise to offers more high-end, but Lexar did not stint on quality memory Intel and now can afford not to restrict the user in how much information he is allowed to write to the drive.

However, you need to understand that this drive is still not designed for high loads. But it’s not in the endurance of flash memory, and that with heavy use, the performance of the SSD is markedly reduced. To maintain good responsiveness of the controller Lexar NM610 requires a sustained pause, during which he will be able to release SLC cache and to reorganize a table of address translation, the size of which in this case is smaller than in models with a private DRAM.

All this is easy to illustrate the results of practical experiments. To see the algorithms SLC-caching in action, we looked at how changing the speed of continuously writing data to the Lexar NM610 500 GB (the measurements were carried out on a clean SSD).

The write speed of Lexar NM610 in SLC-mode up to about 1.6 GB/s, and to free drive with such performance, you can record about 65 GB of data. In a slow TLC-mode consider SSD only goes after that. And while writing new data in the TLC mode, the controller need to free up space – compress the data that was recorded in a single bit SLC mode. As a result, the write speed is not only reduced to the level of about 135 MB/s but loses any stability. Fortunately, under normal home use such situations will have to face often – they can occur only when continuous recording very large amounts of data.

It is easy to trace and how affects the performance of the fact that in-memory with fast access Lexar NM610 is only part of the table address translation. It is enough to observe the rate at random melloblocco reading, which requires multiple search matches in the table of address translation. For example, we follow the reduced speed random reads with increasing of the volume data which are read requests.

To interpret these results is very simple. As long as the total size of the files accessed by the storage controller, remains so that any required portion of the table of address translation is placed in the HMB-buffer in RAM, we see the constant speed random read (queue requests) at 63 MB/s. But as soon as the active part table in HMB buffer fit ceases, the performance immediately drops. In the worst case, the speed of random access can be reduced by about half, to a relatively low level of 33 MB/s.

Based on these data, we can assume that for his HMB-buffer Lexar NM610 reserves a memory region size of 64 MB. Therefore, sets of files smaller than 64 GB it works with good speed, and with the further increase of the volume leads to a drop in performance.

In addition, the firmware Lexar NM610 we found algorithms to increase its performance in benchmarks. Their essence lies in the fact that the information got to the SLC cache is delayed it for some time to provide the best performance when accessing files that were recorded just. You can see this with a simple experiment, during which we check the speed of random melkoplodnogo read data from a small file right after burning it on a flash drive, and after this the SSD was added some more information.

Speed melkoplodnogo reading at 63 MB/s Lexar NM610 shows only when working with the newly written, “fresh” test file. If after write this file in the SSD was recorded 28 GB of data, he’s from SLC cache is displaced and the performance of the access it falls in half. Another drop in performance occurs after a write to the SSD 64 GB of data — it is due to the displacement of the information about the source file of HMB-buffer, which stores a copy of the table of address translation.

Thus, the architecture of the drive is such that it cannot provide the same quick access to all the information that it stores. High performance is achieved only in the case when working with relatively small amounts of data. In other words, should not be regarded as NM610 Lexar high-speed solution for high loads — the drive for them did not fit.

#Appearance and internal structure

For testing we received from Lexar sample NM610 capacity of 500 GB. This volume should be significantly faster than the 250 GB version and is close in speed to the terabyte drive. Cost Lexar NM610 500 GB in local shops is less than 5 thousand rubles.

About external performance Lexar NM610 to tell especially there is nothing. This is a typical accumulator-based low-cost controller SMI SM2262XT. Very similar in design to the SSD offer and many other companies – in this regard, Lexar did not invent anything original. Fee NM610 is a M. 2 module form factor 2280, designed for installation in the slot supplied with four lines of PCI Express 3.0. Regular cooling the drive has.

 

On the front side is pasted the label with the model name and serial number. No additional useful information, such as production date or version of firmware on it. The reverse side of the PCB NM610 free from components that allows you to use this SSD in particular in thin laptops.

An array of flash memory is represented by four chips, inside each of which contains four crystal 64-layer TLC 3D NAND produced by Intel. Such crystals have a capacity of 256 GB, therefore, four-channel array formed with a fourfold alternating devices NAND channels, which causes a maximum capacity of 500 GB version among the various capacity options Lexar NM610.

 

You should pay attention to the fact that the chips flash memory does not have the Intel logo and labeled with some obscure sequence of characters. The fact that the testing and packing of crystals in the chip Lexar (or rather Longsys) working independently, receiving from Intel flash memory in the form of uncut wafers. This reduces the cost of the final product.

In addition, against the background of similar products lineup Lexar NM610 stands out somewhat atypical set of dimensions that are multiples of 250 GB. Thus, to the backup area in the storage allocated about 9 % of the total flash-memory. There are no fundamental advantages it does not, but having a slightly larger pool of “spare” cells in certain circumstances can extend the life time of the SSD.

Nothing more interesting in the design of the Lexar NM610 no. Perhaps someone surprised by the small size of the chip SM2263XT or the lack of the usual circuits of dynamic memory, but for those who have seen the drives on low-cost Silicon platform Motion, all of this is quite ordinary things. In other words, the flagship offer Lexar was indeed reduced NVMe product, which is built on the stripped-down characteristics of the platform. But it is quite appropriate money.

#Software

Now, almost all SSD manufacturers offer a utility service that allows you to monitor the status of SSD and manage their work. From Lexar, this role is assigned to the utility SSD Dash, however, from the point of view of functionality, this development should be attributed to the number of not the most successful examples of such programs: its possibilities are very limited.

The only thing you can do with this utility is to see General information about the SSD to access its S. M. A. R. T.-telemetry, and run Secure Erase. One can only hope that the program will evolve in the future will acquire additional features.

SOURCE

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Peripherals

Whether PCI Express 4.0 is an advantage Ryzen 3000? Check on NVMe SSD

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One of the key areas in the marketing strategy to promote AMD processors Ryzen 3000 was the focus on appeared to them, supporting high-speed interface PCI Express 4.0. Indeed, the new Ryzen, built on microarchitecture Zen 2, became the first consumer-level processors that have received this high-speed interface, and, moreover, none of the current Intel platforms of the item of PCI Express 4.0 in the list of features to date has not. Do not use this reason for the protrusion of the progressivity of its products to AMD, of course, could not, and therefore, as in the time of the announcement Ryzen 3000, and after him the representatives of the company did not miss a single case to trump the appropriate opportunity.

The arguments in favor of AMD’s new tires, which allows you to select devices interface with double greater than before throughput was reduced to two theses: “it’s good for graphics cards” and “this is good for SSDs”. However, to be honest, their reasoning is flawless no different.

Speaking about the benefits of moving to PCI Express 4.0 for graphics cards, AMD representatives refer to synthetic test of the capacity of 3DMark, which really shows 69-percent performance improvement when using higher speed version of the bus.

However, this should make two large but which AMD is silent. First, support PCI Express 4.0 only selected video cards, related to the Radeon RX series RX 5700 and 5500, while members of the family GeForce quite successfully cost traditional interface PCI Express 3.0. Secondly, if we talk about real the games load, it obviously does not generate such volumes of data that would not be enough bandwidth common graphic bus PCI Express 3.0 x16, reaching 16 GB/s. moreover, even the use of interface PCI Express 2.0 lowers the frame rate in popular games in 4K resolution on a few percent, and the difference in GPU performance when connecting to the CPU when using the third and fourth version of the tyre in the worst case is a few tenths of a percent.

Transfer SSD to work through the PCI Express 4.0 seems to be a much more sensible step, because modern NVMe SSD really getting to the limit of bus bandwidth PCI Express 3.0 x4. Increase the speed of the interface by adding PCI Express would be too easy a way out, since consumer SSDS are firmly accustomed to the form factor M. 2, which allows to bring to drive no more than four lines. But switching to PCI Express 4.0 can be easily held within the framework of existing ecosystems, and this action seems quite sensible, because it allows you to raise the bar of peak velocities from 3.9 to 7.9 GB/s. this is the point AMD marketing materials, which the company says almost polutorakratnoe increase disk subsystem performance in processor systems Ryzen 3000.

But it’s not so simple. First and foremost you need to understand that we are talking exclusively about the growth of linear velocities, while in the responsiveness of solid state drives due to the transfer at a higher speed interface is definitely not going to win here because this is not determined by external bus, and their internal architecture and capabilities of the flash memory. That is, in the average common scenarios such impressive growth, which is depicted on a marketing slide from AMD, of course, will not.

It is important to take into account another important point: the leading SSD manufacturers do not support PCI Express 4.0 in their products. So if you want to install in your Ryzen 3000 system NVMe drive with the new high-speed interface will have to choose among the proposals of the second-the third echelon. And moreover, all of the SSDS with support for PCI Express 4.0 x4 are similar and rely on the same controller PS5016-E16 independent developer Taiwan’s Phison, which engineers have been unable to mark any notable achievements in the field of building high-performance platforms for consumer SSDS. In other words, much optimism these SSD do not cause.

However, we are not accustomed to rely on some value judgment and everyone is trying to check in practice. Moreover, the question of what kind of SSD is to recommend to a modern system based on Ryzen 3000, seeking to squeeze the maximum out of it possible, not idle. Drives based on controller Phison PS5016-E16 PCI Express x4 4.0 finally made it to local stores. So, a lot of buyers decided to opt for a relevant and promising the AMD platform, you rise before a choice: whether to establish a system of time-tested performance SSD with a PCI Express 3.0 interface; whether to give in to the propaganda AMD and Phison and try to get better performance, contact the new products with the support of PCI Express 4.0. In this article we will try to find out what is better after testing both options in real conditions.

#Why are we even talking about PCI Express 4.0

The PCI Express 3.0 specification was approved in November 2010, and it is not surprising that to date, this tire is firmly entrenched as the base interface for interfacing computing devices. Especially helped in this by two factors: the protracted development of the next version of the standard, on the one hand, and the absence of a request for speed beyond the capabilities of PCI Express 3.0 on the other. However, gradually the industry came to realize the need for further progress, what especially helped with SSDs. The rapid growth in this industry has led to the fact that the SSD was able to rest against the speed limitations of the existing interface, and the output to mass-market PCI Express 4.0 really made sense.

The PCI Express 4.0 was adopted in June 2017. It has improved flexibility and scalability, for example, considered the possibility of a physical realization not only in the form of slots and tracks on the Board, but in the form of external connectors and cables; added additional control commands for the purposes of energy conservation; and most importantly — doubled the speed of data transmission. Equally important, all of these improvements do not entail any fundamental changes in the Protocol. A two-fold increase in throughput achieved by the simple increase in the frequency of data transmission, keeping the old coding scheme of the signal. As a result, between the new and old standards maintained both direct and backward compatibility, and hence, hosts and terminals that support different versions of PCI Express can without any problem to work with each other.

Data exchange via the bus PCI Express 3.0 occurs with a frequency of 8 billion transfers per second, and PCI Express 4.0, this frequency has already reached 16 billion transfers per second. Thus, while the bandwidth of one PCI Express 3.0 lines amounted to 985 MB/s (including 128b/130b encoding) in the PCI Express 4.0 it has doubled – up to 1969 MB/s. Further naturally expanded bandwidth all standard for mass PC tires. Speed of PCI Express x4 4.0 increased to 7.9 GB/s, and PCI Express x16 4.0 was able to transmit data with the maximum capacity of 31.5 GB/s (in each direction).

  Bandwidth, GB/s
×1 ×2 ×4 ×8 ×16
PCI Express 1.0 0,25 0,5 1,0 2,0 4,0
PCI Express 2.0 0,5 1,0 2,0 4,0 8,0
PCI Express 3.0 0,98 Of 1.97 3,94 Of 7.88 15,75
PCI Express 4.0 Of 1.97 3,94 Of 7.88 15,75 31,51

The new version of the platform Socket AM4 using the chipset X570, was the first and only point of the presence of PCI Express 4.0 in the mass systems. Thanks to it, users can build a system with a new high-speed bus today, but to test this high-speed tire, you need three components. First, the processor family Ryzen 3000, PCI Express controller, which supports the fourth version of the Protocol. Second, the motherboard chipset AMD X570, which has optimized wiring signal lines capable of guaranteeing the integrity of information during transmission at the high frequency bus. And third, a terminal device with support for PCI Express 4.0, which can be either a graphics card or, as in our case, the SSD. In the absence of one of these components, the system will still work due to the two-way version compatibility PCI Express, but in a slower-than-4.0, mode.

Thus, the spare tire is still in practice will only in a very small number of desktop systems. Gradually, however, Park platforms with support for PCI Express 4.0 will be expanded. So, in the coming months AMD plans to add this interface in one of your set logic – B550. This will reduce the entry price threshold for systems that support wireless high-speed tires, but the processor family Ryzen 3000 is still needed.

As for Intel, it will support PCI Express 4.0 it’s very easy. Microprocessor giant somehow missed the moment when the new specification was ready, and now far behind AMD in terms of its implementation. Clearly speaks for itself the fact that even in the server segment support PCI Express 4.0 at Intel could not appear before the middle of next year. As usual personal computers on the Intel platform, they speed the tire “Shine” very soon, as planned for 2020 Comet Lake processors and chipsets of the 400 series provides just the usual PCI Express 3.0, and further the company’s plans look very uncertain.

In other words, Intel will soon be playing the role of a brake of progress, and we can say almost certainly that this implementation of PCI Express 4.0 will not happen as rapidly as one would expect. For example, if we talk about SSD at the moment supports this high-speed bus with only a single controller Phison development, and the emergence of any alternatives in the foreseeable future is not expected. Especially skeptical to the idea of issue under NVMe SSD interface PCI Express 4.0 in the near future are the leading manufacturers of scale Western Digital and Samsung. Apparently, they intend to wait for the time when PCI Express 4.0 will appear in the Intel platform, and the mass of the solution with its support will be offered only in anticipation of this event.

That is why today we have to talk about the usefulness of PCI Express 4.0 for consumer NVMe SSD using as an illustration just one example – built on the controller Phison PS5016-E16 drive Gigabyte Aorus Gen4 NVMe SSD.

#The main hero – Gigabyte Aorus Gen4 NVMe SSD

Although we rendered in the subtitle of this section, the name of the drive Gigabyte, who visited us in the lab, everything said below is equally true for any other NVMe SSD controller Phison PS5016-E16, and even now any other available mass storage device under the PCI Express 4.0, as long as the market does not appear the nominal support of this promising interface. To make this generalization allows us production strategy Phison, not much over the past years, no changes. The fact that the developer of controllers offers its partners not chip and SSD with them. Therefore, the diversity of models on the basis of Phison PS5016-E16 – apparent. In fact, all these products are made one of the patterns on the same plant and differ only in the names, bodywork and accessories, such as cooling systems.

This means that any currently available drive with support for PCI Express 4.0 has a completely predictable hardware configuration: it will be based on the controller PS5016-E16, which manages the TLC 3D NAND-memory, belonging to the class BiCS4. This memory has a 96-layer design and comes Toshiba. She, by the way, can be seen not only in the drives with interface PCI Express 4.0, but in some other models NVMe SSD with a traditional interface, for example, in Kingston KC2000. But for a drive that claims to be a significant improvement in speed performance, the use of a three-bit BiCS4-memory – point of principle. Such flash memory is faster than previous versions and is able to better reveal the potential of the external bus with twice the bandwidth.

Of course, to increase the linear velocities provided by the array of flash memory, there is always an extensive way – the increase in the number of channels. But the platform Phison PS5016-E16 continues to rely on the traditional eight-channel scheme. And this is quite logical: adding channels would considerably complicate the circuitry of the drive, and the design of the controller. The same Phison engineers in the development of its first PCI Express 4.0 controller treated it as a transitional solution, and therefore not particularly strained. Architectural chip PS5016-E16 is very similar to the PCI Express 3.0 controller PS5012-E12 — with some improvements in the firmware and only upgraded the hardware unit responsible for the implementation of the external interface.

The rest of Phison PS5016-E16 does not differ almost from the predecessor, with which we are acquainted in detail on the example of Silicon Power P34A80 and the Gigabyte Aorus RGB M. 2 NVMe SSD. It represents the average processing power of a chip based on dual-core 32-bit processor ARM Cortex R5, which offers eight channels to connect a three-bit or four-bit flash memory with 800-MHz interface. Also present in the controller DRAM controller to operate the cache memory in which you can be a DDR4 SDRAM. In addition, it has the usual set of proprietary technologies Phison, including a special co CoXprocessor serving technology and Express entry algorithm for LDPC encoding and error correction of the fourth generation, hardware-based encryption scheme AES256 and so on.

It is significant that in reality power Couple PS5016-E16 to completely fill the bandwidth of the four PCI Express 4.0 is not enough. The official specs of this chip is the maximum speed of the linear reading of 5.0 GB/s and write is 4.4 GB/s, which is a third below the capabilities of the tire. Peak the performance of random operations expected close to the PS5012-E12 and it is 750 and 600 thousand IOPS when reading and writing respectively. In other words, even the Phison is no reason to think that on the basis of PS5016-E16 can collect some really high-performance NVMe SSD, which could be attributed to a number of flagship of new generation solutions. However, there was no choice — the other options are to build a drive that supports x4 PCI Express 4.0 for today simply does not.

The result is to advance the PCI Express 4.0 at the mass market end manufacturers of drives with AMD had to go to a specific fraud and try to build around the platform Phison E16 halo high-end product, which she from a technical point of view can not be. Appears pseudolites, for example, that we have chosen to test the Gigabyte Aorus Gen4 NVMe SSD costs a lot, comes in a large neatly decorated simply packaging and comes with a massive and a quality cooling system made of bars of copper. When I take this device, really starting to think that this is a premium, high performance solid state storage systems to the highest level.

For tests, we took the version of the Gigabyte Aorus Gen4 NVMe SSD capacity of 2 TB. This is the maximum capacity version of this drive. Since the 96-layer crystals Toshiba BiSC4 have a capacity of 512 GB, an array of flash memory 2-TB drive is formed of 32 NAND devices. This, in turn, means that the channels of the controller Phison PS5016-E16 used a fourfold rotation, which ensures the best performance. In other words, for example, the Gigabyte Aorus Gen4 NVMe SSD we will see the maximum of what a capable platform Phison PS5016-E16.

Gigabyte Aorus exposed NVMe SSD Gen4 with the removed radiator looks completely ordinary. This is the familiar gaze of the enthusiast M. 2 card form factor 2280 with a key of type M in stab connector. To understand in her appearance that the drive is able to use four lines of PCI Express 4.0, it is absolutely impossible. However, we should not forget that due to backward compatibility, this SSD can be installed in the system without the support of the new version of the interface: in this case it will use the external bus mode 3.0.

On close acquaintance with the Gigabyte Aorus NVMe SSD Gen4 immediately evident that its circuit Board is virtually identical layout from Gigabyte Aorus RGB M. 2 NVMe SSD on the basis of the last controller PS5012-E12. And this means that the new PCI Express 4.0 controller Phison PS5016-E16 not only inherits from its predecessor, most of the domestic units, but also working with him on the conclusions.

But the controller itself PS5016-E16 look at this very familiar. Its upper surface is closed with Nickel-plated copper plate, then chips, Phison has not previously been observed. The explanation is simple: despite the fact that the controller is made according 28-nm process, it reaches the dissipation under load 6.7 W, and a metal plate may support the heat sink.

 

On-Board SSD in question has four chip flash memory marked TABHG65AWV. They sliced and packaged in the factories of the Taiwanese PTI from silicon semi-Toshiba: this memory – it is a typical option for drive controllers Phison. Usually, the use of such “non-native” chipsets makes us question the quality of the flash memory, because of its selection and sorting in this case is responsible not Toshiba itself, as a mediator. But drives with the Phison controller PS5016-E16, which is now on the market have a high of the declared resource, which for a 2 TB version reaches 3.6 Pb. Apparently, for a flagship product Phison purposefully selects the flash memory of the higher grades.

In addition to the flash memory and the controller on both sides of the drive located on the chip DDR4-1600 SDRAM. Used Gigabyte chips production SK Hynix, that is the amount of memory required for the controller to work effectively with the table of address translation on the Gigabyte Aorus Gen4 NVMe SSD 2 TB is a typical 2 GB.

#Antagonist – 970 Samsung EVO Plus

As products based on the controller Phison PS5016-E16 aiming to occupy the top rung in the hierarchy of consumer NVMe SSD, compare Gigabyte Aorus NVMe SSD logical Gen4 is the fastest and best models use to communicate with the system familiar to the bus PCI Express 3.0. So we thought it fair to oppose the storage Gigabyte is the most popular NVMe SSD Samsung EVO 970 Plus, the benefit of his 2-TB not so long ago appeared on the market.

Give details about the inner workings 970 Samsung EVO Plus there is not much point – we’ve done it several times already. It is therefore only briefly recall the fundamental details. Based on 970 Samsung EVO Plus lies Samsung’s proprietary controller Phoenix, which, as shown, has a good performance potential and phenomenal flexibility. On the first point, it is sufficient to mention that it locked up pachydermia ARM-processor, and the second is to remind you that this controller is included in all contemporary NVMe SSD South Korean manufacturer, including models for MLC- and even on SLC-memory.

After the second controller component, which makes from 970 Samsung EVO Plus fast model, this is a special flash memory. It found the use of corporate TLC 3D V-NAND, Dating back to the fifth generation. Crystals such memory was a monolithic 90-layer design and significantly improved performance characteristics and energy consumption. The result is 970 Samsung EVO Plus long and firmly holds the title of fastest mass NVMe SSD with TLC memory.

 

Interestingly, apparently 970 Samsung EVO Plus capacity 2 TB completely different from the drives of the same model, but smaller capacity. This means that no sophisticated cooling device is not provided here and the manufacturer believes that the overheating protection will be enough a label with an inner layer of copper foil glued to the back side of the drive. Which, incidentally, does not carry any chips.

The uniqueness of the 970 EVO Plus 2 TB is that Samsung managed to gather such a capacious SSD on a unilateral M. 2 2280-Board and whole array of the flash memory is placed just two chips. “Stuff” in a single chip a terabyte of flash memory Samsung has managed through the use of crystals with a size of 512 GB, which are stacked in 16 pieces – able to do so only a few manufacturers. Another chip on the 970 EVO Plus 2 TB chip LPDDR4 SDRAM 2GB, so that all components of the drive are four circuits (including the controller).

As for performance, version 970 EVO Plus 2 TB formally, even a bit faster modifications younger volume. But this is manifested only in the performance melkoplodnyj operations, which is stated at 620 and 560 thousand IOPS when reading and writing respectively, which is slightly lower than the promise drives on the controller Phison PS5016-E16. Linear speed, of course, limited to the bandwidth of the PCI Express 3.0 interface and is 3.5 and 3.3 GB/s for reading and writing. In other words, on paper it looks like Samsung EVO Plus 970 vs Gigabyte Aorus Gen4 NVMe SSD has no chance. However, we are not just caught on Phison inflating passport numbers, so do not be surprised if in practice the picture is not the same.

What 970 Samsung EVO Plus definitely plays a daring competitors with support for PCI Express 4.0 is in terms of warranty service: the South Korean manufacturer is not ready to allow users such as hard to load your drives. The declared resource of 970 EVO Plus 2 TB is only 1.2 Pb – three times less than that of the SSD based on Phison controller PS5016-E16.

#Specifications table

All the promises Phison and its partners regarding the performance of the new generation PCI Express 4.0 drives based on controller PS5016-E16, we have compiled the following table, where the passport specifications Gigabyte Aorus Gen4 NVMe SSD 2 TB are compared with the characteristics of 970 Samsung EVO Plus a similar volume. And let such data are usually poorly correlated with actual performance SSD, but it is clear bluster, armed with which manufacturers drives on the platform Phison E16 trying to convince the owners of the new Socket AM4-systems in the rationality of choice to use in conjunction with the processor family Ryzen 3000 such media.

Manufacturer Gigabyte Samsung
Series Aorus Gen4 NVMe SSD 970 EVO Plus
Model number GP-ASM2NE6200TTTD MZ-V7S2T0
Form factor M. 2 2280
Interface 4.0 PCI Express x4 NVMe 1.3 PCI Express 3.0 x4 NVMe 1.3
Capacity, GB 2000 2000
Configuration
Memory chips: type, interface, process technology, manufacturer Toshiba 96-layer 512 GB TLC 3D NAND (BiCS4) Samsung 90-layer 512 GB TLC 3D V-NAND
Controller Phison PS5016-E16 Samsung Phoenix
Buffer: type, volume DDR4-1600, 2 GB LPDDR4, 2 GB
Performance
Max. sustained sequential read, MB/s 5000 3500
Max. sustained sequential write speed, MB/s 4400 3300
Max. speed of random read (blocks 4 KB) IOPS 750 000 620 000
Max. speed random write (blocks 4 KB) IOPS 700 000 560 000
Physical characteristics
Power consumption: inaction/read-write, W 0,02/6,6 0,03/6,0
MTBF (mean time between failures), million h 1,77 1,5
Resource record, TB 3600 1200
Dimensions: D × H × D, mm 23,5 × 80,5 × 11,4 22,15 × 80,15 × 2,38
Weight, g 95 8
Warranty period, years 5 5

#Features SLC-caching

Every time we talk about the performance claimed by the manufacturers, we have to make a disclaimer that they belong to the SSD with SLC caching, in which all accesses to the flash memory occur in a single bit mode. In some cases this is appropriate, since many SSDs offer SLC cache is quite sufficient for very extended operations, but it is still not true for any consumer NVMe SSD. For example, disk drives based on controllers Phison, always suffered from the fact that SLC cache they worked on a static algorithm and had a very small size, resulting in users often had to face a steep drop in the speed when copying or writing large files.

Fortunately, the firmware for the controller PS5016-E16 developers Phison finally was able to fix the old problem and for the first time implemented a progressive dynamic algorithm SLC-caching. This means that the information is written to the drive in SLC mode, as long as it allows an open space, and transfer of cells TLC 3D NAND to established a three-bit mode in idle moments. In other words, high speed recording, the Gigabyte Aorus Gen4 NVMe SSD you can not worry – it really can be achieved for very large amounts of data.

In this respect, the drive platform Phison E16 are the envy of even 970 Samsung EVO Plus is not as effective combined scheme of Express entry Intellegent TurboWrite. For example, in dvuhterabaytny version 970 EVO Plus SLC cache consists of a 6 GB static and variable dynamic, but its maximum volume even on a completely clean drive is limited by the size of 78 GB. At the same time in the Gigabyte Aorus Gen4 NVMe SSD of the same capacity in the accelerated mode, it is possible to fill the third space, that is, on an empty SSD capacity SLC cache can reach 667 GB.

To illustrate all this very easy using the graph of maximum continuous speed of sequential write on a clean drives Gigabyte Aorus Gen4 NVMe SSD 2 TB Samsung EVO 970 Plus 2 TB.

Here you can really see how much more information may take the Gigabyte Aorus NVMe SSD Gen4 2 TB, compared to 970 Samsung EVO Plus 2 TB at its specification speed. Although in fairness it should be noted that of the 970 EVO Plus the size of the SLC cache is that to go beyond it in real conditions will not work in 99.9% of cases. But even if we talk about the performance of a linear recording in the SLC mode, the drive platform Phison E16 looks more attractive thanks to the support of PCI Express 4.0. Here its relevance is undeniable: the high-speed interface allows you to write information to the drive faster as eight-channel array of the flash memory in the SLC mode has a greater bandwidth than four lines PCI Express 3.0.

However, in a native TLC mode, the array of flash memory in 970 Samsung EVO Plus is much more productive. The storage capacity of 2 TB, it provides the write speed at 1.3 Gbytes/s, while in the Gigabyte Aorus Gen4 NVMe SSD 2TB write speed after filling in SLC-Kesha drops to 530 MB/s. However, this result is unlikely to have any practical value: we’re talking about the drives for desktops, and in such systems there are no tasks that require continuously keep on to the media hundreds of gigabytes as fast as possible.

Another thing – read operation. Phison is among the manufacturers that have mastered the optimization of its products under benchmarks. It lies in the fact that the files written to the drive, remain in the SLC cache for some time in order to appeal to them to run after recording, were served faster. This simple technique brings no benefit during actual operation, but strongly influences the test results because the measurement of speed of reading from the file immediately after creating such a file is a typical scenario in which in almost all benchmarks.

To illustrate how it works, this magic trick is very simple. The following graph shows the speed of random melkoplodnogo read data from a file on the Gigabyte Aorus Gen4 NVMe SSD 2 TB Samsung EVO 970 Plus 2 TB as soon as it is created, and once on the SSD after the test file contains some more information.

It is clearly seen that in 970 Samsung EVO Plus fresh file is immediately sent from the SLC cache to the main array of TLC-memory storage provides for him the speed melkoplodnogo read queue of requests at the level of 46.5 MB/sec. the same Drive platform Phison E16 saves the new file in the SLC cache for some time, and thus the speed of reading random blocks is phenomenally high, at around 56 MB/s. But not for long. If after the test file to the drive to save some amount of information, he will move into the bulk of TLC memory and speed melkoplodnogo access drops to 40 MB/s – that such a level of performance and will deal with the real users.

All this means the following: don’t believe the popular benchmarks like CrystalDiskMark. They NVMe SSD controller Phison PS5016-E16 will show impressive numbers, but these numbers do not actually describe the real performance, but just to illustrate that complex optimizations, which is in drives like the Gigabyte Aorus Gen4 NVMe SSD. In fact, view themselves (left – score, the Gigabyte Aorus Gen4 NVMe SSD 2TB; right – 970 Samsung EVO Plus 2 TB).

Gigabyte Aorus NVMe Gen4 SSD 2 Тбайт

Gigabyte Aorus NVMe SSD Gen4 2TB

 
Samsung 970 EVO Plus 2 Тбайт

970 Samsung EVO Plus 2 TB

It seems that the Gigabyte Aorus Gen4 NVMe SSD won over 970 Samsung EVO Plus 2TB landslide victory, defeating his on all graded in CrystalDiskMark performance. But don’t jump to conclusions: we will show that in real conditions of storage on the basis of Phison PS5016-E16 is not as good as it first seems, and certainly can not boast of an indisputable superiority over 970 Samsung EVO Plus.

SOURCE

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