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Core i9-9900X against the Core i9-9900K: letter changes everything

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Platform LGA2066 and processor family Skylake-X was submitted to Intel for more than two years ago. Initially this decision was aimed by the company for the HEDT segment, i.e. high-performance system for users who are creating and processing content, because Skylake-X contained a significantly greater number of computational cores compared with the usual representatives of the families Kaby Lake and the Coffee Lake.

However, for the time elapsed from the appearance of the Skylake-X, the landscape of the CPU market has changed significantly, and today is enough available CPU can have six or even eight cores, and promising massive CPU, which should go in the course of this year, can get ten or even twelve cores. Does that Skylake-X useless chips? Probably not. First, among the representatives of this series exist in sentences with 16 and 18 cores, and similar mass in the near future, the market will not be exact. Secondly, the platform laid LGA2066 and other benefits that differentiate them from conventional consumer processors, such as the superiority of memory channels and available lines PCI Express.

Therefore, cosmetic update of the model series Skylake-X microprocessor giant held at the end of last year, it seemed quite natural – it perfectly fit into the accepted Intel’s annual schedule of announcements. However, the attitude of the manufacturer towards their HEDT-novelties little surprise: the company not only did not review rates, but also refused to provide a sample processor the IT press, limiting only the formal presentation and the subsequent start of sales.

Apparently, the company believed the new Skylake-X secondary and uninteresting products, but we with this formulation fundamentally disagree. Yes, the number of cores, the representatives of this lineup in the upgrade process is not increased. But they boast other interesting improvements: according to the increased clock frequency and increased number of L3 cache, and improved internal thermal interface. So we decided to give updated Skylake-X some attention, what really helped us in the store,”regard, have agreed to grant to research a new LGA2066-desyatiletnego: Core i9-9820X and Core i9-9900X.

Besides, the moment of the announcement Skylake-X Refresh us, did not give rest a question: why do older desyatiletnego HEDT processor Intel chose similar confusingly the name with the popular mass osmeterium Core i9-9900K? What does it mean? And now we have a chance to understand…

#Lineup Skylake-X Refresh

New LGA2066 processors with model numbers from your thousandth Intel announced in October of last year. Among the new products included seven models: six series processors Core i9 with the number of cores from 10 to 18 and eight-core model Core i7 conditional initial level. No shestiyaderny and Quad for LGA2066 in the new generation no longer provides that on the background of rapid growth of the platform LGA1151v2 is not surprising.

Cores/ threads Base frequency, GHz Turbocheetah, GHz L3 cache MB Memory TDP, watts Price
Core i9-9980XE 18/36 3,0 4,5 24,75 DDR4-2666 165 $1 979
Core i9-9960X 16/32 3,1 4,5 22,0 DDR4-2666 165 $1 684
Core i9-9940X 14/28 3,3 4,5 19,25 DDR4-2666 165 $1 387
Core i9-9920X 12/24 3,5 4,5 19,25 DDR4-2666 165 $1 189
Core i9-9900X 10/20 3,5 4,5 19,25 DDR4-2666 165 $989
Core i9-9820X 10/20 3,3 4,2 16,5 DDR4-2666 165 $889
Core i7-9800X 8/16 3,8 4,5 16,5 DDR4-2666 165 $589

The most noticeable change in the processors listed in the table, when compared with previous models Skylake-X seven series, was the increase in clock frequencies. The nominal frequency rose 200-600 MHz, and the maximum frequency achieved by the inclusion of turbo speed, increased by 200-300 MHz. In addition, younger members of the series increased the capacity of the cache memory of the third level. Earlier it was calculated on the basis of rules “1,375 MB per core”, and now each core can have up to about 2 MB of cache. Finally, the controller PCI Express eight-core Core i7-9800X was fully unlocked so that the processor has at its disposal all the 44 lines, which were previously available only to processors with 10 cores or more.

However, all these pleasant changes resulted in an increase in heat dissipation. While the first generation Skylake-X had a thermal Suite, limited by 140 watts, the new processors feature increased TDP of 165 watts. In other words, for higher frequencies, which has the new processors without any fundamental change in the applied for their release on 14-nm process, have to pay increased energy and thermal limits.

However, Intel itself when it claims that raising the speed characteristics allowed the introduction of production technology to a third version, code-named 14++ nm, which is now manufactured processors Coffee Lake Coffee Lake and Refresh. And if not that, then heat dissipation could be even higher. But fear that the new Skylake-X may be prone to overheating, no reasons. To reduce the operating temperature of the new processors have improved termoenergetyczny material under the heat-spreading lid. The place of the previously used polymeric thermal paste took the solders known to be higher conductivity.

But all the above is just the tip of the iceberg. The fact that changes in the specifications, first and foremost, the increase of the cache memory of the third level, is far more an unexpected basis. Now to release HEDT processors Intel started to use a slightly different “meaning” of semiconductor crystals.

This means the following: HEDT processors have always been a desktop kind of server chips. Traditionally, Intel took a minor modification Xeon, adapted thereto, the memory controller and some other features and transposed them into the desktop environment. Thus, while for their server products Intel has produced three options semiconductor crystals: LCC (Low Core Count) with 10 cores, the HCC (High Core Count) c 18 cores and XCC (eXtreme Core Count) c 28 cores in the desktop HEDT processors, only the most simple versions of the crystals. Thus, the processors Skylake-X is the first generation with 6, 8 and 10 cores were used the crystal LCC, and in versions with 12, 14, 16 and 18 cores used crystal HCC.

In updated Skylake-X, about which we are talking today, the younger version of the crystal LCC no longer applies. All the new HEDT processors thousandth of the series, including eight – and decategory options are based on the crystal HCC. That is, even in Core i7-9800X or Core i9-9900X potentially feature 18 cores, but much of it is hardware locked at the manufacturing stage.

Such strange at first sight, the decision was taken in order to increase the volume of cache in the new processors. The internal structure of the Skylake-X assumes that on each computation core is allocated a portion of the cache memory with a capacity of 1,375 MB. And if in the same Core i9-9900X used Junior crystal LCC, more 13,75 MB L3-cache, this processor is obviously to could. A larger crystal HCC in this respect more flexible, it has in total laid 24,75 MB cache, and this increased volume is partly involved in the eight – and desyatiletnij processors of the new wave.

Полупроводниковый кристалл Skylake-X HCC

Semiconductor chip Skylake-X HCC

As a result, all Skylake-X steel unified design, but the reverse side of this unification was the widespread use of very large semiconductor crystal with an area of about 485 mm2, more than two and a half times the area of the crystal Lake Coffee OCTA core Refresh. This means that any of LGA2066-thousandth series processors has significantly higher cost in comparison with the same Core i9-9900K. But despite this, eight-core Core i9-9800X in the official price list priced just $100 more than the Core i9-9900K. Therefore, it is reasonable to assume that the production of eight – and desyatiletnij processors based on 18-core crystals still is for Intel some economic sense, for example, the company takes this opportunity to implement semiconductor crystals with a large number of manufacturing defects that until now could not find worthy application.

#Read more about desyatiletnij Core i9-9900X and Core i9-9820X

For testing we took two desyatiletnij processor “new wave” – Core i9-9900X and Core i9-9820X. Despite the fact that these CPU moved to a new crystal HCC, compared to Core i9-7900X they have changed not so much. Usually Intel with the release of the second generation of processors for the past varieties HEDT platform translated them into a newer microarchitecture, but now it did not happen. The changes affected only the numerical parameters, are qualitatively the same in the face of the Core i9-9900X and Core i9-9820X we have almost the same thing that was offered and decategory Core i9-7900X sample of 2017.

But Skylake-X second generation, there are no compatibility problems: they work fine in the existing LGA2066-motherboards based on chipset Intel X299. Like its predecessors, they have a four channel controller DDR4-memory, and built-in them, the controller PCI Express 3.0 supports 44 lines, which in theory can be split up into an arbitrary number of slots — from three to eleven.

However, the semiconductor crystal HCC, the underlying Core i9-9900X and Core i9-9820X, is somewhat different from the crystals that were used in high Skylake-X before. Although formal stepping saved the number M0, which was characteristic of the original versions of Skylake-X with the number of cores over 12, now Intel was used in the production process of modified lithographic masks in connection with the employment of a more Mature process technology 14++ nm process technology over the past 14+ nm. The key difference of the techniques is a bit more step between the gate of the transistor, which, as we have seen in the case of Coffee Lake, has a positive effect on the frequency capacity.

At the level of micro there is no change at all. Surprisingly, the new processors Skylake-X Refresh was not even any hardware fixes to reduce the vulnerability Meltdown and the Spectre. And it’s very strange on the background of the fact that in the parallel product Coffee Lake Refresh, released at the same time, certain patches have already appeared. For example, LGA1151v2 modern processors are protected against attacks Meltdown (Variant 3) and L1TF (Variant 5) at the hardware level.

But the most offensive not even that. The main reason for the disorder – the absence of any change in the scheme of combining the components of the processor in a single unit. In Skylake-X Refresh continues to use the peer-to-peer mesh a Mesh network is overlaid on top of the array of processor cores. This scheme internuclear connections performing well with a significant increase in the number of cores in server processors, but for HEDT products with not too high number of cores it is much different than a traditional ring bus, causing a dramatic increase of delays. One of the methods of struggle against this negative effect could be an acceleration Mesh connections, but here everything remained the same. The frequency of the interconnection as in the past, this year’s Skylake-X set at around 2.4 GHz, so the L3 cache and memory controller have LGA2066 processors have considerably worse latency to the background of the mass Coffee Lake Refresh. However, this is partly kompensiruet extended cache memory of the second level, which Skylake-X has a volume of 1 MB per core instead of four times less.

All this is easy to illustrate the graph of the latency of the memory subsystem processors Skylake-X the current generation in comparison to Coffee Lake Refresh. It clearly shows the lack of improvement in the situation of delays in the new HEDT processors.

But new deletedevice can boast of progress in clock frequency and in the size of the cache memory. For example, Core i9-9900X victimization has a L3-cache of the volume of 19.25 MB, which is 40% larger than the size of the cache in the past desacuerdos processor Core i9-7900X. Base frequency of the new model increased from 3.3 to 3.5 GHz, but the maximum frequency of the Core i9-9900X in turbo mode can go up to the same 4.5 GHz that were available and desyatiletnego of the previous generation. In both cases, the reach 4.5 GHz requires the use of technology Turbo Boost Max 3.0, with the traditional maximum turbo frequency for the Core i9-9900X is 4.4 GHz.

However, in practice the situation with frequencies Core i9-9900X develops a little differently. Under load on all cores CPU is clocked to 4.1 GHz.

If the workload uses AVX instructions, the processor frequency is reduced to 3.8 GHz.

And the most expensive 512-bit instructions from a new set of AVX-512 full load on all cores cause the CPU to slow down to 3.4 GHz that should be noted, even lower than the advertised specifications nominal frequency.

If we talk about desacuerdos Core i9-9820X, which stands on the step below, he differs from his older brother mainly volume cache of the third level, which he cut down to 16.5 MB. Slightly lower frequency and passport, but we should not forget that all HEDT processors from Intel have free multipliers that will allow enthusiasts to ignore this deficiency.

However, the nominal frequency Core i9-9820X – 3.3 GHz and the maximum frequency in turbo mode is 4.1 or 4.2 GHz depending on whether we are talking about technology Turbo Boost Turbo Boost 2.0 or 3.0 Max.

In practice, when operating the CPU with default settings and the load on all cores Core i9-9820X capable of operating at a frequency of 4.0 GHz.

If the load uses AVX instructions, the processor decreases the frequency to 3.8 GHz.

And in AVX-512 frequency Core i9-9820X drops to nominal value is 3.3 GHz.

Speaking about what new decategory LGA2066 processors better than the old Core i9-7900X, it’s impossible to forget what happened in the transition to more efficient internal thermal interface. Heat-dissipating cap now soldered to the crystal the same way as is done in Coffee Lake Refresh. Intel says that due to this, the new processors are more efficiently cooledand operate at lower temperatures, however, there are two but. First, Intel used solder does not cause much enthusiasm in the ranks of the overclockers, since it is less efficient than liquid metal. And secondly, now for most enthusiasts was unavailable scalping procedure: remove the cover without damaging the CPU, it has become very difficult, therefore, to improve the thermal interface is extremely difficult.

At the end of the story about the characteristics of the Core i9-9900X and Core i9-9820X it is worth to mention prices. Here Intel did not show any imagination and set the cost of senior desathaliernika Core i9-9900X in the same $989, which it asked for Intel Core i9-7900X related to the previous generation. But the Core i9-9820X is $100 cheaper, which makes it a more attractive offer for enthusiasts, since a lower 15% L3-cache is unlikely to greatly affect performance, and the nominal clock frequency for the real enthusiasts, high performance are irrelevant.

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The Intel Core i5-9400F: fake Coffee Lake Refresh

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Despite the obvious difficulties with the production of 14-nm chips in sufficient quantities, Intel continues to gradually expand the lineup of Core processors, the ninth generation, known under the code name Coffee Lake Refresh. However, given it to her with varying degrees of success. That is, formally in the lineup really added new products, but in retail they appear very reluctant, and some models presented immediately after the New year novelties have been unable to check in the stores until now.

However, based on official data, now for the platform LGA1151v2 there are already at least nine desktop models of the Core pertaining to the thousandth of the series, including processors with four, six and eight cores. Moreover, the composition of this family includes not only the obvious representatives with predictable characteristics, but also unexpected CPU that is different from all predecessors ideologically. We are talking about CPUs F-series mass desktop chips, the specifications of which is not stated integrated graphics core.

Surprising in their appearance that these deals have expanded the range of consumer Intel for the first time in the last eight years, during which the company offered for mass segment only solution with integrated graphics. But now something has changed and the microprocessor giant has been forced to revise his principles. And we even know that: failures in planning and difficulties with the commissioning process with a 10-nm standards has led to a serious lack of Intel on the market, to mitigate which the company is trying by all means. The release of processors without integrated graphics – one of the rather apparent measures aimed at achieving this goal. Thanks to it the manufacturer has been able to set a serial processor previously considered defective semiconductor workpiece with a corrupted graphics core, which even at eight Coffee Lake Refresh “biting” up to 30 % of the area is 174 mm crystal. In other words, such a measure capable of increasing the yield and significantly reduce waste.

However, if Intel is the point in the release of processors F-series is quite obvious, that Benet from the emergence of such offers consumers the issue is very controversial. The chosen manufacturer of the tactic is that trimmed at its core, the processors are implemented without any discounts, for the same price as their “full” counterparts. In order to fully understand this situation, we decided to take the tests one of the Core lineup of the ninth generation, devoid of the integrated graphics and try to find his hidden advantages.

As the object for investigation was selected as Core i5-9400F Junior six-core CPU generation Coffee Lake Refresh. This chip of particular interest: its predecessor, the Core i5-8400, at the time, was very popular thanks to very attractive ratio of price and performance. Officially announced four months ago, Core i5-9400 (no F in the name) offers a slightly higher frequency such at the same price, but selling him is practically impossible. But the Core i5-9400F represented on the shelves everywhere, and, moreover, since the deficit of this model does not apply, its real value in retail as close as possible to recommended. However, this does not Core i5-9400F a good option for “basic” configurations automatically, because now AMD in the same price category offers six-core processors Ryzen 5, which, in contrast to the Core i5 series have the support for multithreading (SMT). That is why today’s quiz promises to be especially meaningful: it must give an answer to several questions and clearly show whether the Core i5-9400F chance to repeat the success of the legendary Core i5-8400.

#Lineup Refresh Coffee Lake

To date, there have been two waves of announcements of processors that are conditionally related to the generation of Coffee Lake Refresh. Despite the fact that such a CPU is largely similar to its predecessors from the family of Coffee Lake, Intel refer them to the ninth generation of Core numbers and indices, start with the number 9. And if the Core i7 and Core i9 this distinction may be partly justified, because they first obtained an eight compute cores, the new processors series Core i5 and Core i3 got an increase in model numbers for the most part. In fact, they only offer higher clock frequency.

While no improvements on the level microarchitecture can not speak at all. And surprise, to be honest, it doesn’t matter. Intel practiced the concept of development is that the profound changes in processors attached to the improvement of production technologies. Therefore, the delay in the implementation of the 10-nm process technology lead to the fact that we once again have to deal with the Skylake microarchitecture, released in 2015. However, what is surprising for some reason Intel does not seek to change features that do not require any noticeable change. For example, the official Coffee Lake Refresh continue to rely on dual DDR4-2666 memory, while AMD has repeatedly adds to its processors support high-speed modes, reaching in the latest versions of mobile Raven Ridge already up to DDR4-3200. The only thing that made Intel, is increased up to 128 GB of memory supported in systems based on Coffee Lake Refresh.

However, despite the absence of changes in microarchitecture, Intel still manages to produce quite an interesting model, extensive methods – increasing the number of cores and clock frequency. The first wave of announcements Coffee Lake Refresh, which took place in October last year, brought three flagship overclocking of the processor, to conquer new frontiers of performance: OCTA core Core i9-9900K and Core i7-9700K, as well as six-core Core i5-9600K. With the second wave of the Christmas list for the latest processors added another six CPU easier. In the end, the full nomenclature of the Refresh Coffee Lake began to look like the following.

Cores/ threads Base frequency, GHz Turbocheetah, GHz L3 cache MB iGPU IGPU frequency, GHz Memory TDP, watts Price
Core i9‑9900K 8/16 3,6 5,0 16 UHD 630 1,2 DDR4‑2666 95 $488
Core i9‑9900KF 8/16 3,6 5,0 16 No DDR4‑2666 95 $488
Core i7‑9700K 8/8 3,6 4,9 12 UHD 630 1,2 DDR4‑2666 95 $374
Core i7‑9700KF 8/8 3,6 4,9 12 No DDR4‑2666 95 $374
Core i5‑9600K 6/6 3.7 V 4,6 9 UHD 630 1,15 DDR4‑2666 95 $262
Core i5‑9600KF 6/6 3.7 V 4,6 9 No DDR4‑2666 95 $262
Core i5‑9400 6/6 2,9 4,1 9 UHD 630 1,05 DDR4‑2666 65 $182
Core i5‑9400F 6/6 2,9 4,1 9 No DDR4‑2666 65 $182
Core i3‑9350KF 4/4 4,0 4,6 8 No DDR4‑2400 91 $173

The main part of the processors added to the released in the first place overclocking K-models later, consists of chips, deprived of the integrated graphics core. Technically Core i9-9900KF, Core i7-9700KF and Core i5-9600KF are based on exactly the same semiconductor Foundation, and have absolutely the same characteristics as the Core i9-9900K, Core i7-9700K and Core i5-9600K, differing only in the fact that they don’t offer the built-in GPU, in hardware blocks at the production stage.

But the list of innovations of the second wave can be seen and indeed a new model. First is the Core i3-9350KF is the only Coffee Lake Refresh Quad core processor with an unlocked multiplier. If you close your eyes to the lack of built-in GPU, it is possible to calculate an updated version of the Core i3-8350K, which was accelerated by adding Turbo Boost technology 2.0 and the newfound ability of automatic overclocking to 4.6 GHz.

Another more-or-less full new in the second wave it is possible to calculate Core i5-9400 and devoid of the integrated graphics Core i9 fellow-9400F. The value of these models lies in the fact that with their help, Intel has significantly lowered the cost of the Junior six-core Coffee Lake Refresh, allowing you to use the latest generation CPU in the configuration baseline. However, formal differences between Core i5-9400 from last year’s hit, Core i5-8400, not so much. Clock frequency increased by only 100 MHz, which is likely due to the desire of the microprocessor giant to leave your younger shestiyaderny within the 65-watt thermal package. As a result, the gap in the maximum frequency in turbo mode between the senior and the Junior six-core processors in the family Coffee Lake Refresh increased to 500 MHz, while in the generation of Coffee Lake it was only 300 MHz.

Judging from the specs, it seems that trump the new Core i5-9400 and Core i5-9400F on the background of the old Core i5-8400 really nothing. However, the specifications in this case do not give quite the full picture. During the announcement of the first Coffee Lake Refresh, Intel said, including about the advantages of an indirect nature. For example, for a new generation of chips was promised a change of the internal thermal interface: polymer place of thermal paste was to take a highly bestlady solder. But does this apply to the Junior six-core Core processors, the ninth generation? It turns out that not always.

#Details about Core i5-9400F

It so happened that, releasing the Coffee Lake Refresh processors, Intel raked in the pile, several different variants of semiconductor crystals with process technology 14 nm++, and not all of them are in fact new. Based on Core processors, the ninth generation may lie as semiconductor crystals, designed for them specifically, and relatively old versions of the silicon, which was used extensively including in the processors of the eighth generation ranked as family Coffee Lake.

In particular, at the moment aware of the existence of at least four stoppingof crystals that are set in a certain mass the Core of thousandth of the series:

  • P0 – the only “honest” option of the crystal, which is really unfair to make Coffee Lake Refresh. This crystal has eight cores and is used in overclocking the Intel Core i9-9900K, Core i7-9700K and Core i5-9600K in their F-variations of the Core i9-9900KF, Core i7-9700KF and Core i5-9600KF, as well as the Intel Core i5-9400;
  • U0 – six-core crystal used in processors Coffee Lake, that is, in the eighth generation Core. Now it is used to create a six-core Core i5-9400F;
  • B0 the Quad – core chip, which is used for the Intel Core i3-9350K. This version of silicon, too, came into the Quad-core processor straight out of the Coffee Lake, including the Core i3-8350K;
  • R0 – a new stepping of a crystal, in which it is assumed will be the senior Core processors, the ninth generation, starting in may. Currently, the serial CPU does not occur, and therefore no specific information about its features and causes no.

Thus, the Core i5-9400F about which we are talking in this review, is the black sheep: one of a kind processor that may be internal to the device is different from the other six-core and eight-core counterparts-generation Coffee Lake Refresh. Strictly speaking, it is not a stripped-down or time-lapse version of the Core i5-9600K or Core i5-9400, and a slightly overclocked variant of the old Core i5-8400 with disabled graphics core.

And I must say, this is manifested not only in the screenshots diagnostic utilities that show for the Core i5-9400F old stepping U0 instead of a new P0. In Core i5-9400F in fact, there is no innovation peculiar to Coffee Lake Refresh. In particular, the Assembly of these chips soldering the die to the heat-spreading lid is not applied, and the internal thermal interface is exactly the same polymer compound used in processors Coffee Lake.

Core i5-9400F и Core i5-9600K без крышки. Фото momomo_us

Core i5-9400F and Core i5-9600K without a lid. Photo momomo_us

In addition, the Core i5-9400F, unlike the rest of a new generation of Coffee Lake Refresh going on the PCB with thinner the PCB is the same as used for conventional Coffee Lake.

Слева направо: Core i5-8400, Core i5-9400F и Core i5-9600K

From left to right: Core i5-8400, Core i5-9400F and Core i5-9600K

And moreover, even the shape of the heat-spreading lid Core i5-9400F gives the relationship of the Core CPU of the eighth generation. Because purebred Coffee Lake Refresh cover has changed.

Слева направо: Core i5-8400, Core i5-9400F и Core i5-9600K

From left to right: Core i5-8400, Core i5-9400F and Core i5-9600K

In other words, there is no doubt that the Core i5-9400F – in fact, no Coffee Lake Refresh and rejection of previous-generation processors with disabled graphics core. And this applies to all wholly supplied at present, the serial Core i5-9400F that largely explains the wide availability of these processors at a time when the mass supply of Coffee Lake Refresh others continue to experience significant problems. For example, formally announced simultaneously with the Core i5-9400F its “full” counterpart with integrated graphics UHD Graphics 630, which should be based on “fair” crystal stepping P0, in retail sales is still missing.

At the same time, the microprocessor giant doesn’t exclude the possibility of transfer Core i5-9400F on the “right” stepping P0 in the medium term. But it will happen, obviously, only when all accumulated in the warehouses of Coffee Lake with a defective integrated GPU will be successfully sold out.

However, for most users this fact of forgery of silicon crystals is unlikely to have any significance. Anyway, Core i5-9400F real shestiyadernik without support Hyper-Threading, which at any load is running at 100 MHz faster than its predecessor, Core i5-8400. This means that the frequency formula Core i5-9400F corresponds to $10 more expensive Core i5-8500.

Despite the fact that Core i5-9400F claimed comparatively low base frequency of 2.9 GHz, in reality this CPU is able to work much faster thanks to technology Turbo Boost 2.0. If enabled, the Multi-Core Enhancements (that is the default mode for the vast majority of motherboards) under full load, the Core i5-9400F able to keep the frequency of 3.9 GHz accelerating under load on one core to 4.1 GHz.

  Nominal frequency The maximum frequency Turbo Boost 2.0
1 core 2 cores 3 core 4 cores 5 cores 6 cores
Core i5-8400 2.8 GHz 4.0 GHz 3.9 GHz 3.9 GHz 3.9 GHz 3.8 GHz 3.8 GHz
Core i5-8500 3.0 GHz 4,1 GHz 4.0 GHz 4.0 GHz 4.0 GHz 3.9 GHz 3.9 GHz
Core i5-9400(F) 2.9 GHz 4,1 GHz 4.0 GHz 4.0 GHz 4.0 GHz 3.9 GHz 3.9 GHz

No overclocking capabilities in this speech, of course, is not. The most capable Core i5-9400F, for the maximum allowed in the technology Turbo Boost 2.0 frequency. And on motherboards with chipsets H370, B360 or H310 do not get to use and faster than DDR4-2666 memory. More speed modes available only on motherboards with older chipsets Z370 or Z390.

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Motherboard Gigabyte Z390 Designare: when I checkered, and go

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Motherboard Gigabyte Z390 Designare: when I checkered, and go

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