Intel Core i7 6700K vs Intel Core i7 8700K

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We compared two desktop CPUs: Intel Core i7 6700K with 4 cores 4.0GHz and Intel Core i7 8700K with 6 cores 3.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i7 6700K 's Advantages

Higher base frequency (4.0GHz vs 3.7GHz)

Lower TDP (91W vs 95W)

Intel Core i7 8700K 's Advantages

Released 2 years and 2 months late

Higher specification of memory (DDR4-2666 vs DDR4-2133)

Larger memory bandwidth (41.6GB/s vs 34.1GB/s)

Larger L3 cache size (12MB vs 8MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i7 6700K

1136

Intel Core i7 8700K +6%

1214

Cinebench R23 Multi Core

Intel Core i7 6700K

5661

Intel Core i7 8700K +54%

8765

Geekbench 6 Single Core

Intel Core i7 6700K +4%

1544

Intel Core i7 8700K

1475

Geekbench 6 Multi Core

Intel Core i7 6700K

5265

Intel Core i7 8700K +20%

6339

Blender

Intel Core i7 6700K

96

Intel Core i7 8700K +59%

153

Geekbench 5 Single Core

Intel Core i7 6700K

1087

Intel Core i7 8700K +13%

1233

Geekbench 5 Multi Core

Intel Core i7 6700K

4271

Intel Core i7 8700K +55%

6632

Passmark CPU Single Core

Intel Core i7 6700K

2510

Intel Core i7 8700K +9%

2748

Passmark CPU Multi Core

Intel Core i7 6700K

8940

Intel Core i7 8700K +52%

13661

Intel Core i7 6700K

VS

Intel Core i7 8700K

General Parameters

Aug 2015

Release Date

Oct 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Coffee Lake

i7-6700K

Processor Number

i7-8700K

LGA-1151

Socket

LGA-1151

HD Graphics 530

Integrated Graphics

UHD Graphics 630

Package

1.75 billions

Transistor Count

-

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-1151

91 W

Power Consumption

95 W

-

Peak Operating Temperature

100 °C

CPU Performance

4

Performance Cores

6

8

Performance Core Threads

12

4.0 GHz

Performance Core Base Frequency

3.7 GHz

4.2 GHz

Performance Core Turbo Frequency

4.7 GHz

4

Total Core Count

6

8

Total Thread Count

12

100 MHz

Bus Frequency

100 MHz

40x

Multiplier

37x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

8 MB shared

L3 Cache

12 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133, DDR3L-1600

Memory Types

DDR4-2666

64 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

34.1 GB/s

Max Memory Bandwidth

41.6 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

350 MHz

1150 MHz

GPU Max Dynamic Frequency

1200 MHz

-

Shader Units

192

-

Texture Units

24

-

Raster Operation Units

3

-

Execution Units

24

-

Power Consumption

15 W

-

Max Resolution

4096x2304 - 60 Hz

-

Graphics Performance

0.38 TFLOPS

Miscellaneous

Intel Core i7 6700K

Official Website

Intel Core i7 8700K

3.0

PCIe Version

3.0

16

PCIe Lanes

16

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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