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Core i5-8400 vs Core i9-7940X

Core i5-8400 vs Core i9-7940X: game performance, price, value, and specification comparison. Select comparison game parameters.

FPS Tie

Intel Core i5-8400

2.8 GHz | 6-core

Intel Core i5-8400 Logo
Intel Core i5-8400 Desktop Processor 6 Cores up to 4.0 GHz LGA 1151 300 Series 65W

Buy for $130.73 on Amazon

In Stock

Updated 7181 minutes ago

vs
FPS Tie

Intel Core i9-7940X

3.1 GHz | 14-core

Intel Core i9-7940X Logo
Intel Core i9-7940X X-Series Processor 14 Cores up to 4.3 GHz Turbo Unlocked LGA2066 X299 Series 165W

Buy for $397.83 on Amazon

In Stock

Updated 7181 minutes ago

FPS Tie

Intel Core i5-8400

2.8 GHz | 6-core

Intel Core i5-8400 Logo
Intel Core i5-8400 Desktop Processor 6 Cores up to 4.0 GHz LGA 1151 300 Series 65W

Buy for $130.73 on Amazon

In Stock

Updated 7181 minutes ago

vs
FPS Tie

Intel Core i9-7940X

3.1 GHz | 14-core

Intel Core i9-7940X Logo
Intel Core i9-7940X X-Series Processor 14 Cores up to 4.3 GHz Turbo Unlocked LGA2066 X299 Series 165W

Buy for $397.83 on Amazon

In Stock

Updated 7181 minutes ago

Key Differences

In short, we have a clear winner — Core i5-8400 outperforms the more expensive Core i9-7940X on the selected game parameters, and is also a better bang for your buck! The better performing Core i5-8400 is 34 days newer than the more expensive Core i9-7940X.

Advantages of Intel Core i5-8400

  • Up to 67% cheaper than Core i9-7940X - $130.73 vs $397.83
  • Up to 67% better value when playing The Last of Us Part I than Core i9-7940X - $0.97 vs $2.95 per FPS
  • Consumes up to 61% less energy than Intel Core i9-7940X - 65 vs 165 Watts

Advantages of Intel Core i9-7940X

  • Can execute more multi-threaded tasks simultaneously than Intel Core i5-8400 - 28 vs 6 threads
This is a free version of The Last of Us Part I.
The Last of Us Part I

The Last of Us Part I

Resolution

1920 x 1080

Game Graphics

Ultra

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017


FPS

135

100%

Value, $/FPS

$0.97/FPS

100%

Price, $

$130.73

100%

Value Winner

Intel Core i5-8400 Desktop Processor 6 Cores up to 4.0 GHz LGA 1151 300 Series 65W

Buy for $130.73 on Amazon

In Stock

Updated 7181 minutes ago

Intel Core i9-7940X Logo
Core i9-7940X

Desktop • Sep 1st, 2017


FPS

135

100%

Value, $/FPS

$2.95/FPS

32%

Price, $

$397.83

32%

Intel Core i9-7940X X-Series Processor 14 Cores up to 4.3 GHz Turbo Unlocked LGA2066 X299 Series 165W

Buy for $397.83 on Amazon

In Stock

Updated 7181 minutes ago

TOP 5 Games

Resolution

1920 x 1080

Game Graphics

Ultra

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017

Intel Core i9-7940X Logo
Core i9-7940X

Desktop • Sep 1st, 2017

Geekbench 5 Benchmarks

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017


Single-Core

1353

98%

Multi-Core

4748

47%

Intel Core i9-7940X Logo
Core i9-7940X

Desktop • Sep 1st, 2017


Single-Core

1370

100%

Multi-Core

9923

100%

Intel Core i5-8400 Logo

Intel Core i5-8400

vs
Intel Core i9-7940X Logo

Intel Core i9-7940X

Oct 5th, 2017
Release DateSep 1st, 2017
Core i5CollectionCore i9
Coffee LakeCodenameSkylake
Intel Socket 1151SocketIntel Socket 2066
Desktop
Segment
Desktop
6Cores
14
6Threads
28
2.8 GHzBase Clock Speed
3.1 GHz
4.0 GHzTurbo Clock Speed
4.3 GHz
65 W
TDP165 W
14 nmProcess Size14 nm
28.0xMultiplier
31.0x
NoneIntegrated GraphicsNone
NoOverclockable
Yes

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