Intel Coffee Lake Core i7-8700K, Core i5-8600K, Core i5-8400 CPU Review on ASRock FATAL1TY Z370 Professional Gaming i7 Motherboard



ASRock FATAL1TY Z370 Professional Gaming i7

5th October, 2017
Type Motherboard
Price $289.99 US

Test Setup

For testing, we used the latest Intel Core i7-8700K, Core i5-8600K and Core i5-8400 CPUs which were sent to us by Intel. The Intel Coffee Lake family comes with higher core count on the main stream platform but prices are close to the predecessors in the same segment. We also slightly updated our test platform as Intel had sent us with their 32 GB Optane Memory which they say boosts performance of SATA based storage devices significantly and Coffee Lake can prove to be worthy demonstration for this type of memory product.

Intel Z370 Platform Test Setup:

ProcessorIntel Core i7-8700K
Intel Core i5-8600K
Intel Core i5-8400
Intel Core i9-7900X
Intel Core i7-7820X
Intel Core i7-7800X
Intel Core i7-7740X
Intel Core i5-7640X
Intel Core i7-6950X
Intel Core i7-6900K
Intel Core i7-6800K
Intel Core i7-7700K
Intel Core i5-7600K
AMD Ryzen 7 1800X
AMD Ryzen 7 1700X
AMD Ryzen 5 1600X
MotherboardASRock Z370 Professional Gaming i7
ASRock X299 Taichi
Gigabyte GA-X99-UD7
Gigabyte AORUS Z270X-Gaming 8
ASRock X370 Killer SLI/AC
Power SupplyCorsair RM 750X Gold Plus
Solid State DriveSamsung SSD 960 EVO M.2 (512 GB)
Hard DiskSeagate Barracuda 2 TB 7200.12
MemoryG.SKILL Trident Z RGB Series 32 GB (4 x 8GB) CL16 3600 MHz
CaseCorsair Graphite Series 780T Full Tower
Video CardsMSI GeForce GTX 1080 Ti Lightning X
Cooling SolutionsCorsair H115i GTX
Cryorig R1 Ultimate
OSWindows 10 64-bit

Our test rig includes the Samsung 960 EVO 500 GB SSD that boots up our main OS while a 2 TB Seagate HDD is used for demonstration purposes for the Intel Optane memory. In addition to these, we are running a MSI GeForce GTX 1080 Ti Lightning X graphics card, a Corsair RM 750X Gold Plus power supply and 32 GB of G.Skill provided Trident Z RGB series memory which runs with a clock speed of DDR4-3600 MHz. For cooling, we used the Cryorig R1 Ultimate and Corsair H115i GTX AIO coolers to see how the new Coffee Lake CPUs perform on both air and liquid cooling solutions.

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We won't be focusing on Intel's Core i7-7700K architecture in this review since it is entirely the same chip as Skylake along with minor improvements. The Skylake / Kaby Lake architecture analysis can be seen in detail here. For overclocking, I made the following tweaks to the CPUs:

  • Intel Core i7-8700K @ 5.0 GHz With 1.305V (100 x 50)
  • Intel Core i5-8600K @ 5.1 GHz With 1.21V (100 x 51)
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