Key Differences
In short — Core i9-7940X outperforms Core i5-6400 on the selected game parameters. We do not have the prices of both CPUs to compare value. The better performing Core i9-7940X is 792 days newer than Core i5-6400.
Advantages of Intel Core i5-6400
- Consumes up to 61% less energy than Intel Core i9-7940X - 65 vs 165 Watts
- Works without a dedicated GPU, while Intel Core i9-7940X doesn't have integrated graphics
Advantages of Intel Core i9-7940X
- Performs up to 2% better in Valheim than Core i5-6400 - 200 vs 197 FPS
- Can execute more multi-threaded tasks simultaneously than Intel Core i5-6400 - 28 vs 4 threads
Valheim
Resolution
1920 x 1080
Game Graphics
Highest
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Highest
Core i5-6400
Desktop • Jul 2nd, 2015
Core i9-7940X
Desktop • Sep 1st, 2017
Geekbench 5 Benchmarks
Core i5-6400
Desktop • Jul 2nd, 2015
Single-Core
1111
81.0948905109489%
Multi-Core
3023
30.46457724478484%
Intel Core i5-6400 | vs | Intel Core i9-7940X |
|---|---|---|
| Jul 2nd, 2015 | Release Date | Sep 1st, 2017 |
| Core i5 | Collection | Core i9 |
| Skylake | Codename | Skylake |
| Intel Socket 1151 | Socket | Intel Socket 2066 |
Desktop | Segment | Desktop |
| 4 | Cores | 14 |
| 4 | Threads | 28 |
| 2.7 GHz | Base Clock Speed | 3.1 GHz |
| 3.3 GHz | Turbo Clock Speed | 4.3 GHz |
65 W | TDP | 165 W |
| 14 nm | Process Size | 14 nm |
| 27.0x | Multiplier | 31.0x |
HD Graphics 530 | Integrated Graphics | None |
| No | Overclockable | Yes |
