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Core i9-9940X vs Core i5-8400

Core i9-9940X vs Core i5-8400: game performance, price, value, and specification comparison. Select comparison game parameters.

FPS Winner

Intel Core i9-9940X

3.3 GHz | 14-core

Intel Core i9-9940X Logo
Intel Core i9-9940X X-Series Processor 14 Cores up to 4.4GHz Turbo Unlocked LGA2066 X299 Series 165W Processors (999AC9)

Buy for $870.7 on Amazon

In Stock

Updated 10 minutes ago

vs

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 $140 on Amazon

In Stock

Updated 10 minutes ago

FPS Winner

Intel Core i9-9940X

3.3 GHz | 14-core

Intel Core i9-9940X Logo
Intel Core i9-9940X X-Series Processor 14 Cores up to 4.4GHz Turbo Unlocked LGA2066 X299 Series 165W Processors (999AC9)

Buy for $870.7 on Amazon

In Stock

Updated 10 minutes ago

vs

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 $140 on Amazon

In Stock

Updated 10 minutes ago

Key Differences

In short — Core i9-9940X outperforms the cheaper Core i5-8400 on the selected game parameters. However, the worse performing Core i5-8400 is a better bang for your buck. The better performing Core i9-9940X is 379 days newer than the cheaper Core i5-8400.

Advantages of Intel Core i9-9940X

  • Performs up to 1% better in F1 22 than Core i5-8400 - 276 vs 274 FPS
  • Can execute more multi-threaded tasks simultaneously than Intel Core i5-8400 - 28 vs 6 threads

Advantages of Intel Core i5-8400

  • Up to 84% cheaper than Core i9-9940X - $140.0 vs $870.7
  • Up to 84% better value when playing F1 22 than Core i9-9940X - $0.51 vs $3.15 per FPS
  • Consumes up to 61% less energy than Intel Core i9-9940X - 65 vs 165 Watts
This is a free version of F1 22.
F1 22

F1 22

Resolution

1920 x 1080

Game Graphics

Ultra High

Intel Core i9-9940X Logo
Core i9-9940X

Desktop • Oct 19th, 2018


FPS

276

100%

Value, $/FPS

$3.15/FPS

16%

Price, $

$870.7

16%

FPS Winner

Intel Core i9-9940X X-Series Processor 14 Cores up to 4.4GHz Turbo Unlocked LGA2066 X299 Series 165W Processors (999AC9)

Buy for $870.7 on Amazon

In Stock

Updated 10 minutes ago

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017


FPS

274

99%

Value, $/FPS

$0.51/FPS

100%

Price, $

$140

100%

Value Winner

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

Buy for $140 on Amazon

In Stock

Updated 10 minutes ago

TOP 5 Games

Resolution

1920 x 1080

Game Graphics

Ultra High

Intel Core i9-9940X Logo
Core i9-9940X

Desktop • Oct 19th, 2018

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017

Geekbench 5 Benchmarks

Intel Core i9-9940X Logo
Core i9-9940X

Desktop • Oct 19th, 2018


Single-Core

1459

100%

Multi-Core

10734

100%

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017


Single-Core

1353

92%

Multi-Core

4748

44%

Intel Core i9-9940X Logo

Intel Core i9-9940X

vs
Intel Core i5-8400 Logo

Intel Core i5-8400

Oct 19th, 2018
Release DateOct 5th, 2017
Core i9CollectionCore i5
SkylakeCodenameCoffee Lake
Intel Socket 2066SocketIntel Socket 1151
Desktop
Segment
Desktop
14
Cores6
28
Threads6
3.3 GHz
Base Clock Speed2.8 GHz
4.4 GHz
Turbo Clock Speed4.0 GHz
165 WTDP
65 W
14 nmProcess Size14 nm
33.0x
Multiplier28.0x
NoneIntegrated GraphicsNone
Yes
OverclockableNo

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