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

Intel Core i5-7640K
Intel Socket 1151 DESKTOP
3900 MHz / Cores: 4 / Mar 2017
Intel Core i5-7640K

Intel Core i7-6700K
Intel Socket 1151 DESKTOP
4000 MHz / Cores: 4 / Aug 2015
Intel Core i7-6700K

Summary

Reasons to consider Intel Core i5-7640K

This is a newer product, it might have better application compatibility/performance (check features chart below).
Higher theoretical single-threaded performance, based on raw specifications plus core architecture.

Reasons to consider Intel Core i7-6700K

Has an integrated GPU, which allows to run the system without a dedicated graphics card, unlike the Intel Core i5-7640K.
Higher theoretical multi-threaded performance, based on raw specifications plus core architecture.

No winner

Gaming

No clear winner declared


No winner

Productivity

No clear winner declared


Specifications

Features

Intel Core i5-7640K Intel 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 i5-7640K Intel Core i7-6700K
Architecture Intel_Kabylake vs Intel_Skylake
Market Desktop vs Desktop
Memory Support DDR4 vs DDR4
Codename Kaby Lake-X vs Skylake
Release Date Mar 2017 vs Aug 2015

Cores

Intel Core i5-7640K Intel Core i7-6700K
Cores 4 vs 4
Threads 4 vs 8
SMPs 1 vs 1
Integrated Graphics No vs HD Graphics 530

Cache

Intel Core i5-7640K Intel Core i7-6700K
L1 Cache 64 KB (per core) vs 64 KB (per core)
L2 Cache 256 KB (per core) vs 256 KB (per core)
L3 Cache 6144 KB (shared) vs 8192 KB (shared)

Physical

Intel Core i5-7640K Intel Core i7-6700K
Socket Intel Socket 1151 vs Intel Socket 1151
Max Case Temp 72°C vs 72°C
Package vs
Die Size 0 mm² vs 0 mm²
Process 14 nm vs 14 nm

Performance

Intel Core i5-7640K Intel Core i7-6700K
Cpu Frequency 3900 MHz vs 4000 MHz
Turbo Clock Speed 4300 MHz vs 4200 MHz
Base Clock 100 MHz vs 100 MHz
Voltage unknown vs unknown
TDP 112 W vs 95 W

Raw performance index

Raw single-thread performance estimation

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

Points - higher is better

Raw multi-thread performance estimation

  • Intel Core i5-7640K
    18720 points
  • Intel Core i7-6700K
    22080 points

Points - higher is better