Intel Core i7 6850K vs Intel Core i5 8400

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We compared two desktop CPUs: Intel Core i7 6850K with 6 cores 3.6GHz 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 i7 6850K 's Advantages

Larger memory bandwidth (76.8GB/s vs 41.6GB/s)

Higher base frequency (3.6GHz vs 2.8GHz)

Larger L3 cache size (15MB vs 9MB)

Intel Core i5 8400 's Advantages

Released 1 years and 5 months late

Integrated graphics card

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

Lower TDP (65W vs 140W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i7 6850K

979

Intel Core i5 8400 +6%

1038

Cinebench R23 Multi Core

Intel Core i7 6850K +23%

7282

Intel Core i5 8400

5893

Geekbench 6 Single Core

Intel Core i7 6850K

986

Intel Core i5 8400 +31%

1298

Geekbench 6 Multi Core

Intel Core i7 6850K

3877

Intel Core i5 8400 +20%

4677

Geekbench 5 Single Core

Intel Core i7 6850K

988

Intel Core i5 8400 +4%

1032

Geekbench 5 Multi Core

Intel Core i7 6850K +27%

5881

Intel Core i5 8400

4611

Passmark CPU Single Core

Intel Core i7 6850K

2409

Intel Core i5 8400

2387

Passmark CPU Multi Core

Intel Core i7 6850K +23%

11382

Intel Core i5 8400

9214

Intel Core i7 6850K

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Intel Core i5 8400

General Parameters

May 2016

Release Date

Oct 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Broadwell E

Core Architecture

Coffee Lake

i7-6850K

Processor Number

i5-8400

LGA-2011-3

Socket

LGA-1151

N/A

Integrated Graphics

UHD Graphics 630

Package

14 nm

Manufacturing Process

14 nm

LGA-2011-3

Socket

LGA-1151

140 W

Power Consumption

65 W

-

Peak Operating Temperature

100 °C

CPU Performance

6

Performance Cores

6

12

Performance Core Threads

6

3.6 GHz

Performance Core Base Frequency

2.8 GHz

3.8 GHz

Performance Core Turbo Frequency

4 GHz

6

Total Core Count

6

12

Total Thread Count

6

-

Bus Frequency

100 MHz

36x

Multiplier

28x

32 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

15 MB shared

L3 Cache

9 MB shared

No

Unlocked Multiplier

No

Memory Parameters

DDR4-2133

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

2

76.8 GB/s

Max Memory Bandwidth

41.6 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

-

Integrated Graphics

true

-

GPU Base Frequency

350 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 i7 6850K

Official Website

Intel Core i5 8400

3.0

PCIe Version

3.0

40

PCIe Lanes

16

-

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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