Buy on Amazon
£250.99
In Stock
AvailabilityMSRP in USD: $539
Availability
MSRP in USD: $539
Availability
Availability
Key Differences
In short — Core i9-11900K 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 i9-11900K is 1258 days newer than the cheaper Core i5-8400.
Advantages of Intel Core i9-11900K
- Performs up to 6% better in Dead Space than Core i5-8400 - 160 vs 151 FPS
- Can execute more multi-threaded tasks simultaneously than Intel Core i5-8400 - 16 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 38% cheaper than Core i9-11900K - £156.85 vs £250.99
- Consumes up to 48% less energy than Intel Core i9-11900K - 65 vs 125 Watts
Dead Space
Resolution
1920 x 1080
Game Graphics
Ultra
Intel® Core™ i9-11900K Desktop Processor 8 Cores up to 5.3 GHz Unlocked LGA1200 (Intel® 500 Series & select 400 Series chipset) 125W
Buy for £250.99 on Amazon
In Stock
Updated 74478 minutes ago
Intel Core i5-8400 Retail - (1151/Hex Core/2.80GHz/9MB/Coffee Lake/65W/Graphics)
Buy for £156.85 on Amazon
In Stock
Updated 74479 minutes ago
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Ultra
Core i9-11900K
Desktop • Mar 16th, 2021
Core i5-8400
Desktop • Oct 5th, 2017
Geekbench 5 Benchmarks
Core i5-8400
Desktop • Oct 5th, 2017
Single-Core
1353
57.06452973428932%
Multi-Core
4748
43.36865180854951%
Intel Core i9-11900K | vs | Intel Core i5-8400 |
|---|---|---|
Mar 16th, 2021 | Release Date | Oct 5th, 2017 |
| Core i9 | Collection | Core i5 |
| Rocket Lake | Codename | Coffee Lake |
| Intel Socket 1200 | Socket | Intel Socket 1151 |
Desktop | Segment | Desktop |
8 | Cores | 6 |
16 | Threads | 6 |
3.5 GHz | Base Clock Speed | 2.8 GHz |
5.3 GHz | Turbo Clock Speed | 4.0 GHz |
| 125 W | TDP | 65 W |
| 14 nm | Process Size | 14 nm |
35.0x | Multiplier | 28.0x |
UHD Graphics 750 | Integrated Graphics | None |
Yes | Overclockable | No |
Builds Using Core i9-11900K or Core i5-8400
Dead Space, 1920 x 1080, Ultra
133 FPS
£13.61/FPS
GeForce RTX 4080
Core i9-11900K
16 GB, 1 TB SSD
Buy on Amazon
£1,809.6
In Stock
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