Intel Core i5-8600K vs Intel Core i7-6900K

Intel Core i5-8600K
Intel Socket 1151DESKTOP
3600 MHz / Cores: 6 / Jan 2018
Intel Core i5-8600K
Intel Core i7-6900K
Intel Socket 2011-3DESKTOP
3200 MHz / Cores: 8 / May 2016
Intel Core i7-6900K

Summary

Synthetic performance index

  • Intel Core i5-8600K
    100%
  • Intel Core i7-6900K
    115%

Relative performance

Single thread performance index

  • Intel Core i5-8600K
    121%
  • Intel Core i7-6900K
    100%

Relative performance

Multi thread performance index

  • Intel Core i5-8600K
    100%
  • Intel Core i7-6900K
    149%

Relative performance

Reasons to consider Intel Core i5-8600K

Much higher single threaded performance (around 21% higher), makes a noticeable performance difference in gaming and the majority of applications.
45 watts lower power draw.
This is a newer product, it might have better application compatibility/performance (check features chart below).
Has an integrated GPU, which allows to run the system without a dedicated graphics card, unlike the Intel Core i7-6900K.

Reasons to consider Intel Core i7-6900K

Much higher multi threaded performance (around 49% higher). This allows for higher performance in professional applications like encoding or heavy multitasking.

No winner

Gaming

No clear winner declared


Intel Core i7-6900K

Productivity

HWBench recommends Intel Core i7-6900K

Based on productivity benchmarks, overall multithreaded performance and theoretical specifications.


Specifications

Features

Intel Core i5-8600KIntel Core i7-6900K
MMX
SSE
SSE2
SSE3
SSSE3
SSE4.2
AVX
AVX2
EIST
Intel 64
XD bit
VT-x
VT-d
AES-NI
TSX
TXT
CLMUL
FMA3
F16C
BMI1
BMI2
Boost 2.0
HTT

Architecture

Intel Core i5-8600KIntel Core i7-6900K
ArchitectureIntel_CoffelakevsIntel_Broadwell
MarketDesktopvsDesktop
Memory SupportDDR4vsDDR4
CodenameCoffee LakevsBroadwell-E
Release DateJan 2018vsMay 2016

Cores

Intel Core i5-8600KIntel Core i7-6900K
Cores6vs8
Threads6vs16
SMPs1vs1
Integrated GraphicsIntel UHD 630vsNo

Cache

Intel Core i5-8600KIntel Core i7-6900K
L1 Cache64 KB (per core)vs32 KB (per core)
L2 Cache256 KB (per core)vs256 KB (per core)
L3 Cache9216 KB (shared)vs20480 KB (shared)

Physical

Intel Core i5-8600KIntel Core i7-6900K
SocketIntel Socket 1151vsIntel Socket 2011-3
Max Case Temp72°Cvs72°C
PackageFC-LGA1151vs
Die Size151mm²vsunknown
Process14 nmvs14 nm

Performance

Intel Core i5-8600KIntel Core i7-6900K
Cpu Frequency3600 MHzvs3200 MHz
Turbo Clock4300 MHzvs3700 MHz
Base Clock100 MHzvs100 MHz
Voltageunknownvsunknown
TDP95 Wvs140 W

Raw performance index

Raw single-thread performance estimation

  • Intel Core i5-8600K
    5160 points
  • Intel Core i7-6900K
    4144 points

Points - higher is better

Raw multi-thread performance estimation

  • Intel Core i5-8600K
    25920 points
  • Intel Core i7-6900K
    34406 points

Points - higher is better

Synthetic benchmarks

Cinebench R15 CPU Multi 64Bit

  • Intel Core i5-8600K
    1038
  • Intel Core i7-6900K
    1549

points - higher is better

Cinebench R15 CPU Single 64Bit

  • Intel Core i5-8600K
    187
  • Intel Core i7-6900K
    154

points - higher is better