Intel Core i5 6600K vs Intel Core i5 8400

VS

Intel Core i5 6600K

Intel Core i5 8400

We compared two desktop CPUs: Intel Core i5 6600K with 4 cores 3.5GHz and Intel Core i5 8400 with 6 cores 2.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i5 6600K 's Advantages

Higher base frequency (3.5GHz vs 2.8GHz)

Intel Core i5 8400 's Advantages

Released 2 years and 2 months late

Higher specification of memory (2666 vs 2133)

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

Larger L3 cache size (9MB vs 6MB)

Lower TDP (65W vs 91W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 6600K +1%

1040

Intel Core i5 8400

1026

Cinebench R23 Multi Core

Intel Core i5 6600K

3963

Intel Core i5 8400 +46%

5798

Geekbench 6 Single Core

Intel Core i5 6600K +14%

1486

Intel Core i5 8400

1298

Geekbench 6 Multi Core

Intel Core i5 6600K

4406

Intel Core i5 8400 +6%

4677

Blender

Intel Core i5 6600K

63

Intel Core i5 8400 +31%

83

Geekbench 5 Single Core

Intel Core i5 6600K +9%

1125

Intel Core i5 8400

1032

Geekbench 5 Multi Core

Intel Core i5 6600K

3775

Intel Core i5 8400 +22%

4611

Passmark CPU Single Core

Intel Core i5 6600K

2327

Intel Core i5 8400 +2%

2387

Passmark CPU Multi Core

Intel Core i5 6600K

6329

Intel Core i5 8400 +45%

9214

Intel Core i5 6600K

VS

Intel Core i5 8400

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

i5-6600K

Processor Number

i5-8400

LGA-1151

Socket

LGA-1151

HD Graphics 530

Integrated Graphics

UHD Graphics 630

Package

14 nm

Manufacturing Process

14 nm

91 W

Power Consumption

65 W

-

Peak Operating Temperature

100 °C

CPU Performance

4

Performance Cores

6

4

Performance Core Threads

6

3.5 GHz

Performance Core Base Frequency

2.8 GHz

3.9 GHz

Performance Core Turbo Frequency

4 GHz

4

Total Core Count

6

4

Total Thread Count

6

100 MHz

Bus Frequency

100 MHz

35

Multiplier

28x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

6 MB shared

L3 Cache

9 MB shared

No

Unlocked Multiplier

No

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

1050 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 i5 6600K

Official Website

Intel Core i5 8400

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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