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Key Differences
In short — Core i9-9940X outperforms Core i5-8400 on the selected game parameters. We do not have the prices of both CPUs to compare value. The better performing Core i9-9940X is 379 days newer than Core i5-8400.
Advantages of Intel Core i9-9940X
- Performs up to 1% better in Elden Ring than Core i5-8400 - 122 vs 121 FPS
- Can execute more multi-threaded tasks simultaneously than Intel Core i5-8400 - 28 vs 6 threads
Advantages of Intel Core i5-8400
- Consumes up to 61% less energy than Intel Core i9-9940X - 65 vs 165 Watts
Elden Ring
Resolution
1920 x 1080
Game Graphics
Maximum
Core i5-8400
Desktop • Oct 5th, 2017
FPS
121
99%
Value, £/FPS
£1.31/FPS
100%
Price, £
£158.88
100%
Value Winner
Intel Core i5-8400 Retail - (1151/Hex Core/2.80GHz/9MB/Coffee Lake/65W/Graphics)
Buy for £158.88 on Amazon
In Stock
Updated 40 minutes ago
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Maximum
Core i9-9940X
Desktop • Oct 19th, 2018
Core i5-8400
Desktop • Oct 5th, 2017
Geekbench 5 Benchmarks
Intel Core i9-9940X | vs | Intel Core i5-8400 |
|---|---|---|
Oct 19th, 2018 | Release Date | Oct 5th, 2017 |
| Core i9 | Collection | Core i5 |
| Skylake | Codename | Coffee Lake |
| Intel Socket 2066 | Socket | Intel Socket 1151 |
Desktop | Segment | Desktop |
14 | Cores | 6 |
28 | Threads | 6 |
3.3 GHz | Base Clock Speed | 2.8 GHz |
4.4 GHz | Turbo Clock Speed | 4.0 GHz |
| 165 W | TDP | 65 W |
| 14 nm | Process Size | 14 nm |
33.0x | Multiplier | 28.0x |
| None | Integrated Graphics | None |
Yes | Overclockable | No |
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