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Core i9-12900K vs Core i5-8400

Core i9-12900K vs Core i5-8400: game performance, price, value, and specification comparison. Select comparison game parameters.

FPS Winner

Intel Core i9-12900K

3.2 GHz | 16-core

Intel Core i9-12900K Logo
Intel Core i9-12900K 12th Gen Alder Lake 16-Core 3.2 GHz LGA 1700 Processor-BX8071512900K

Buy for £292.89 on Amazon

In Stock

Updated 74181 minutes ago

vs

Intel Core i5-8400

2.8 GHz | 6-core

Intel Core i5-8400 Logo
Intel Core i5-8400 Retail - (1151/Hex Core/2.80GHz/9MB/Coffee Lake/65W/Graphics)

Buy for £156.85 on Amazon

In Stock

Updated 74182 minutes ago

FPS Winner

Intel Core i9-12900K

3.2 GHz | 16-core

Intel Core i9-12900K Logo
Intel Core i9-12900K 12th Gen Alder Lake 16-Core 3.2 GHz LGA 1700 Processor-BX8071512900K

Buy for £292.89 on Amazon

In Stock

Updated 74181 minutes ago

vs

Intel Core i5-8400

2.8 GHz | 6-core

Intel Core i5-8400 Logo
Intel Core i5-8400 Retail - (1151/Hex Core/2.80GHz/9MB/Coffee Lake/65W/Graphics)

Buy for £156.85 on Amazon

In Stock

Updated 74182 minutes ago

Key Differences

In short — Core i9-12900K outperforms the cheaper Core i5-8400 on the selected game parameters. We do not have the prices of both CPUs to compare value. The better performing Core i9-12900K is 1491 days newer than the cheaper Core i5-8400.

Advantages of Intel Core i9-12900K

  • Performs up to 69% better in Diablo IV than Core i5-8400 - 313 vs 185 FPS
  • Can execute more multi-threaded tasks simultaneously than Intel Core i5-8400 - 24 vs 6 threads
  • Works without a dedicated GPU, while Intel Core i5-8400 doesn't have integrated graphics

Advantages of Intel Core i5-8400

  • Up to 46% cheaper than Core i9-12900K - £156.85 vs £292.89
  • Consumes up to 48% less energy than Intel Core i9-12900K - 65 vs 125 Watts
This is a free version of Diablo IV.
Diablo IV

Diablo IV

Resolution

1920 x 1080

Game Graphics

Ultra

Intel Core i9-12900K Logo
Core i9-12900K

Desktop • Nov 4th, 2021


FPS

313

100%

Value, £/FPS

Price, £

£292.89

53%

FPS Winner

Intel Core i9-12900K 12th Gen Alder Lake 16-Core 3.2 GHz LGA 1700 Processor-BX8071512900K

Buy for £292.89 on Amazon

In Stock

Updated 74181 minutes ago

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017


FPS

185

59.105431309904155%

Value, £/FPS

Price, £

£156.85

100%

Intel Core i5-8400 Retail - (1151/Hex Core/2.80GHz/9MB/Coffee Lake/65W/Graphics)

Buy for £156.85 on Amazon

In Stock

Updated 74182 minutes ago

TOP 5 Games

Resolution

1920 x 1080

Game Graphics

Ultra

Intel Core i9-12900K Logo
Core i9-12900K

Desktop • Nov 4th, 2021

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017

Geekbench 5 Benchmarks

Intel Core i9-12900K Logo
Core i9-12900K

Desktop • Nov 4th, 2021


Single-Core

2620

100%

Multi-Core

15445

100%

Intel Core i5-8400 Logo
Core i5-8400

Desktop • Oct 5th, 2017


Single-Core

1353

51.6412213740458%

Multi-Core

4748

30.74134023955973%

Intel Core i9-12900K Logo

Intel Core i9-12900K

vs
Intel Core i5-8400 Logo

Intel Core i5-8400

Nov 4th, 2021
Release DateOct 5th, 2017
Core i9CollectionCore i5
Alder LakeCodenameCoffee Lake
Intel Socket 1700SocketIntel Socket 1151
Desktop
Segment
Desktop
16
Cores6
24
Threads6
3.2 GHz
Base Clock Speed2.8 GHz
5.2 GHz
Turbo Clock Speed4.0 GHz
125 WTDP
65 W
10 nm
Process Size14 nm
32.0x
Multiplier28.0x
UHD Graphics 770
Integrated GraphicsNone
Yes
OverclockableNo

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