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The Core i9-10900K is a much faster gaming CPU than the Core i5-8400, however, it's a much worse value for money, as it's €316.93 more expensive!

Advantages of the Core i9-10900K

  • A much faster CPU for gaming
  • Can execute more multi-threaded tasks simultaneously – 20 vs 6 threads

Advantages of the Core i5-8400

  • Up to 64% cheaper€176.90 vs €493.83
  • A much better value for money for gaming
  • Consumes up to 48% less energy65 vs 125 Watts

Core i9-10900K vs Core i5-8400 for Gaming

The CPU's performance in selected game and settings

Core i9-10900K vs Core i5-8400 in My Games

The FPS you'll get in saved games

The FPS you'll get in saved games

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Synthetic Benchmarks

The Core i9-10900K vs Core i5-8400 in synthetic CPU benchmarks

Intel Core i9-10900K Logo

Core i9-10900K

Apr 30th, 2020


Geekbench 6 Single-Core

1776

100%

Geekbench 6 Multi-Core

9091

100%

Intel Core i5-8400 Logo

Core i5-8400

Oct 5th, 2017


Geekbench 6 Single-Core

1375

77%

Geekbench 6 Multi-Core

4817

53%

Performance Specifications

The Core i9-10900K vs Core i5-8400 in core CPU performance specifications

Intel Core i9-10900K Logo

Core i9-10900K

Apr 30th, 2020


Cores

10-core

100%

L3 Cache

20 MB

100%


Base Frequency

3.7 GHz

100%

Turbo Frequency

5.3 GHz

100%

Max. DDR4 RAM Speed

2933 MHz

100%

Intel Core i5-8400 Logo

Core i5-8400

Oct 5th, 2017


Cores

6-core

60%

L3 Cache

9 MB

45%


Base Frequency

2.8 GHz

76%

Turbo Frequency

4 GHz

75%

Max. DDR4 RAM Speed

2666 MHz

91%

Specifications

Comparison of all specifications

Intel Core i9-10900K Logo

Core i9-10900K

Specifications

Comparison of all specifications

Intel Core i5-8400 Logo

Core i5-8400

General
Apr 30th, 2020
Release DateOct 5th, 2017
$547.00MSRP
$182.00
Desktop
Segment
Desktop
Intel Socket 1200SocketIntel Socket 1151
Comet LakeCodenameCoffee Lake
125 WPower Consumption
65 W
Performance
10
Cores6
20
Threads6
3.7 GHz
Base Frequency2.8 GHz
5.3 GHz
Turbo Frequency4.0 GHz
20 MB
L3 Cache9 MB
Other Features
DDR4 @ 2933 MHzRAMDDR4 @ 2666 MHz
UHD Graphics 630Integrated GraphicsUHD Graphics 630
Yes
OverclockableNo

CPUs / Processors

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