Buy on Amazon
£389.99
In Stock
AvailabilityMSRP in USD: $599
Availability
MSRP in USD: $599
Availability
Availability
Key Differences
In short — Core i9-12900K 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 i9-12900K is 1491 days newer than the cheaper Core i5-8400.
Advantages of Intel Core i9-12900K
- Performs up to 48% better in Assassin's Creed Mirage than Core i5-8400 - 147 vs 99 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 59% cheaper than Core i9-12900K - £158.88 vs £389.99
- Up to 40% better value when playing Assassin's Creed Mirage than Core i9-12900K - £1.6 vs £2.65 per FPS
- Consumes up to 48% less energy than Intel Core i9-12900K - 65 vs 125 Watts
Assassin's Creed Mirage
Resolution
1920 x 1080
Game Graphics
Ultra High
Core i9-12900K
Desktop • Nov 4th, 2021
FPS
147
100%
Value, £/FPS
£2.65/FPS
60%
Price, £
£389.99
40%
FPS Winner
Intel® Core™ i9-12900K Desktop Processor 16 (8P+8E) Cores up to 5.2 GHz Unlocked LGA1700 600 Series Chipset 125W
Buy for £389.99 on Amazon
In Stock
Updated 6410 minutes ago
Intel Core i5-8400 Retail - (1151/Hex Core/2.80GHz/9MB/Coffee Lake/65W/Graphics)
Buy for £158.88 on Amazon
In Stock
Updated 6411 minutes ago
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Ultra High
Core i9-12900K
Desktop • Nov 4th, 2021
Core i5-8400
Desktop • Oct 5th, 2017
Geekbench 5 Benchmarks
Intel Core i9-12900K | vs | Intel Core i5-8400 |
|---|---|---|
Nov 4th, 2021 | Release Date | Oct 5th, 2017 |
| Core i9 | Collection | Core i5 |
| Alder Lake | Codename | Coffee Lake |
| Intel Socket 1700 | Socket | Intel Socket 1151 |
Desktop | Segment | Desktop |
16 | Cores | 6 |
24 | Threads | 6 |
3.2 GHz | Base Clock Speed | 2.8 GHz |
5.2 GHz | Turbo Clock Speed | 4.0 GHz |
| 125 W | TDP | 65 W |
10 nm | Process Size | 14 nm |
32.0x | Multiplier | 28.0x |
UHD Graphics 770 | Integrated Graphics | None |
Yes | Overclockable | No |
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