Intel Core i5-7640X vs Intel Core i7-6700K

Intel Core i5-7640X
Intel Socket 2066DESKTOP
3900 MHz / Cores: 4 / Jun 2017
Intel Core i5-7640X
Intel Core i7-6700K
Intel Socket 1151DESKTOP
4000 MHz / Cores: 4 / Aug 2015
Intel Core i7-6700K

Summary

Synthetic performance index

  • Intel Core i5-7640X
    100%
  • Intel Core i7-6700K
    109%

Relative performance

Single thread performance index

  • Intel Core i5-7640X
    108%
  • Intel Core i7-6700K
    100%

Relative performance

Multi thread performance index

  • Intel Core i5-7640X
    100%
  • Intel Core i7-6700K
    127%

Relative performance

Reasons to consider Intel Core i5-7640X

8% higher single threaded performance.
This is a newer product, it might have better application compatibility/performance (check features chart below).

Reasons to consider Intel Core i7-6700K

Much higher multi threaded performance (around 27% higher). This allows for higher performance in professional applications like encoding or heavy multitasking.
Has an integrated GPU, which allows to run the system without a dedicated graphics card, unlike the Intel Core i5-7640X.

No winner

Gaming

No clear winner declared


Intel Core i7-6700K

Productivity

HWBench recommends Intel Core i7-6700K

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


Specifications

Features

Intel Core i5-7640XIntel Core i7-6700K
MMX
SSE
SSE2
SSE3
SSSE3
SSE4.2
AVX
AVX2
EIST
Intel 64
XD bit
VT-x
AES-NI
CLMUL
FMA3
F16C
BMI1
BMI2
Boost 2.0
VT-d
HTT
TSX
TXT

Architecture

Intel Core i5-7640XIntel Core i7-6700K
ArchitectureIntel_KabylakevsIntel_Skylake
MarketDesktopvsDesktop
Memory SupportDDR4vsDDR4
CodenameKaby Lake-XvsSkylake
Release DateJun 2017vsAug 2015

Cores

Intel Core i5-7640XIntel Core i7-6700K
Cores4vs4
Threads4vs8
SMPs1vs1
Integrated GraphicsNovsHD Graphics 530

Cache

Intel Core i5-7640XIntel Core i7-6700K
L1 Cache64 KB (per core)vs64 KB (per core)
L2 Cache256 KB (per core)vs256 KB (per core)
L3 Cache6144 KB (shared)vs8192 KB (shared)

Physical

Intel Core i5-7640XIntel Core i7-6700K
SocketIntel Socket 2066vsIntel Socket 1151
Max Case Temp72°Cvs72°C
PackageFC-LGA2066vs
Die Size308mm²vsunknown
Process14 nmvs14 nm

Performance

Intel Core i5-7640XIntel Core i7-6700K
Cpu Frequency3900 MHzvs4000 MHz
Turbo Clock4300 MHzvs4200 MHz
Base Clock100 MHzvs100 MHz
Voltageunknownvsunknown
TDP112 Wvs95 W

Raw performance index

Raw single-thread performance estimation

  • Intel Core i5-7640X
    5160 points
  • Intel Core i7-6700K
    4830 points

Points - higher is better

Raw multi-thread performance estimation

  • Intel Core i5-7640X
    18720 points
  • Intel Core i7-6700K
    22264 points

Points - higher is better

Synthetic benchmarks

Cinebench R15 CPU Single 64Bit

  • Intel Core i5-7640X (simulated)
    192.96
  • Intel Core i7-6700K
    177.5

points - higher is better

Cinebench R15 CPU Multi 64Bit

  • Intel Core i5-7640X (simulated)
    691.74
  • Intel Core i7-6700K
    880

points - higher is better