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More cores for the people: Coffee Lake-S with Intel Core i7-8700K and Core i7 8700 in review

For example, you currently only launch two CPUs per class, each with two more cores. If the Core i7 has 6 cores and SMT, which allows 12 threads, the Core i5 can still have 6 cores without SMT. The Core i3 is... The Z370 chipset At first glance, not much has changed about the chipset itself, except that Intel has now reopened up to AMD and has the top three in the nomenclature. PCIe connectivity remains unchanged at 16 Lane... In the AI test of Civilization IV, all CPUs position themselves in a good way as one might expect from the technical data. Even with the Time Spy CPU test, the world of the advertised hierarchies is (almost) still in order. Positive falls here ever... For this benchmark, the Core i7-8700K is exceptionally just ahead of the Core i7-8700, albeit only at average frame rates. The differences are so small that you could almost push everything into the tolerance range. The... Even if a GPU limit is not to be denied here, the CPUs still scale up to a good 140 FPS. However, the overclocked Core i7 of both genrations will no longer bring any extra power, as you can see well on the Min-FPS. ... In Civilization, the overclocked Ryzen 7 1800X can still keep up quite well. Otherwise, the Core i7 are the dominant CPUs in this selection. However, the Core i7-7800X is the inglorious exception, as it still sorts itself behind the... Clock precedes core count and the Core i7-8700 is faster than the K-Pedant. Which brings us to the paradox of our foreword to the tests, where a CPU with nominally lower turbo clock suddenly performs better than the actually more expensive Mo... Project Cars offers a very similar image, in which the non-K model performs a tick faster. The AMD CPUs, on the other hand, have no chance and are clearly behind. Individual results of all maps Other game - same image, except that this time even the older Core i7-7700K can push itself in front of the Core i7-8700K. However, if you run at overclocked to 4.9 GHz with the same clock, the Core i7-8700K is faster again. This shows... This benchmark is effectively in the balance between the two new Core i7, while the core i7-7800X, the core i7-7700K (unclocked) and the AMD CPUs have to be significantly behind. At the same clock, the speed limit is suddenly 4.9 GHz ... In this game, the focus is on the Frame Times and the Min-FPS as a logical consequence. Otherwise, the Core i7-8700 is again a tick faster. The rest repeats itself as well as with the other benchmarks. Single... Important preliminary remark on CPU selection and overclocking Contrary to our usual handling, not benchmarking the productive areas with overclocked CPUs, as it is also rather unlikely in reality, this time we have both Coff... 2D Performance In order to better understand some of the later results, we are putting forward a good old acquaintance. With our GDI/GDI+ benchmark, we are first testing two different output methods for 2D objects, how to... CPU Performance: Workstation Of course, in the production area, not only the 3D graphics performance is important in the production area for the just-set applications, because many things are calculated by the CPU in parallel within these applications (Simu... For these test series, we use benchmarks from the rather versatile SPECwpc suite for workstations, which rely on very different mathematical calculations, which on the one hand can be perfectly parallelized and where it is at the same time a... Overclocking First of all, we are exploring the limits. To make sure that we don't run in thermal limits, because Intel still relies on the tiresome thermal paste between Die and IHS, we initially use the chiller again and cool the... Summary First of all, we would like to thank AMD and their Ryzen family. Without this wake-up call or food for thought, Intel would probably have continued to delight us with now boring four-cores in the consumer sector. But that's how the train-zwan brings...

The Z370 chipset

At first glance, not much has changed about the chipset itself, except that Intel has now reopened up to AMD and has the top three in the nomenclature. PCIe connectivity remains unchanged at 16 Lanes PCIe 3.0, which are available to the user with identical PCIe configuration options. Intel, however, offers up to 40 lanes for the entire platform, after all. Of course, the additional 24 lanes are behind the DMI 3.0 connection that connects the chipset to the processor. The whole thing is very similar to a PCIe 3.0 x4 port and can be very large in the amount of connected devices, such as B. M.2 SSDs. The new structure shows the following schema:

The Z370 chipset, manufactured in 22 nm, absorbs 6W of power, which is identical to the Z270 chipset. The key specifications are also almost identical, such as: Up to 10 USB 2.0, 14 USB 3.0 and six SATA 6Gb/s ports. Intel has also added support for Thunderbolt 3 to the chipset, but provided little details about the implementation. The chipset also supports Intel's Optane memory.

The dual-memory channels with up to two DIMMS per channel (DPC) and a maximum of 64 GB of memory are also the same. Intel does not support ECC on any of the new models, while AMD frees up the option for motherboard manufacturers to enable support.

The MSI Z370 Gaming Pro Carbon AC

MSI continues the Z-series of Gaming Pro motherboards chronologically and again gives the current offshoot similar features to the previous models. In the end, the price positioning on the market should also be similar. The exact board details and specifications can be found on the manufacturer's side if you are interested.

Test setup and technical data

We have already described the new test methodology in the basic article "How we test graphics cards, as of February 2017" in great detail and so we now only refer to this detailed description for the sake of simplicity. So if you want to read everything again, you are welcome to do so.

 

In this case, only the hardware configuration with CPU, RAM, motherboard, as well as the new cooling is different, so that the summary in table form quickly gives a brief overview of the system used here and today:

Test systems and measuring rooms
Hardware:
Intel Socket 1151 (Z370):
Intel Core i7-8700K, Core i7-8700
MSI Z370 Gaming Pro Carbon AC
2x 8GB G.Skill TridentZ DDR4-3200-2666 MHz

Intel Socket 2066

Intel Core i9-7800X
MSI X299 Gaming Pro Carbon AC
4x 4 GB G.Skill RipJaws IV DDR4-2666

AMD Socket AM4 Workstation
AMD Ryzen 7 1800X, 1700X, 1600X
MSI X370 Tomahawk
4x 8 GB G.Skill TridentZ DDR4-3200

Intel Socket 1151 (Z270):
Intel Core i7-7700K
MSI Z270 Gaming 7
2x 8GB Corsair Vengeance DDR4-3200-2400 MHz

All systems:
GeForce GTX 1080 Founders Edition (Gaming)
Nvidia Quadro P6000 (Workstation)

1x 1 TByte Toshiba OCZ RD400 (M.2, System SSD)
4x 1050 GByte Crucial MX 300 (Storage, Images)
Be Quiet Dark Power Pro 11, 850-watt power supply
Windows 10 Pro (all updates)

Cooling:
Alphacool Ice Age 2000 Chiller
Alphacool Ice Block XPX
Thermal Grizzly Kryonaut (for cooler change)
Monitor: Eizo EV3237-BK
Housing:
Lian Li PC-T70 with expansion kit and modifications
Modes: Open Benchtable, Closed Case
Power consumption:
non-contact DC measurement on the PCIe slot (Riser-Card)
non-contact DC measurement on the external PCIe power supply
direct voltage measurement at the shunts, the respective feeders and the power supply
Reading out the motherboard sensors
2x Rohde & Schwarz HMO 3054, 500 MHz multi-channel oscillograph with memory function
4x Rohde & Schwarz HZO50, current togor adapter (1 mA to 30 A, 100 KHz, DC)
4x Rohde & Schwarz HZ355, touch divider (10:1, 500 MHz)
1x Rohde & Schwarz HMC 8012, digital multimeter with storage function
Thermography:
Optris PI640, infrared camera
PI Connect evaluation software with profiles
Acoustics:
NTI Audio M2211 (with calibration file)
Steinberg UR12 (with phantom power for the microphones)
Creative X7, Smaart v.7
own low-reflection measuring room, 3.5 x 1.8 x 2.2 m (LxTxH)
Axial measurements, perpendicular to the center of the sound source(s), measuring distance 50 cm
Noise in dBA (Slow) as RTA measurement
Frequency spectrum as a graph

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About the author

Igor Wallossek

Editor-in-chief and name-giver of igor'sLAB as the content successor of Tom's Hardware Germany, whose license was returned in June 2019 in order to better meet the qualitative demands of web content and challenges of new media such as YouTube with its own channel.

Computer nerd since 1983, audio freak since 1979 and pretty much open to anything with a plug or battery for over 50 years.

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