The Core i5-8400 is a slightly slower gaming CPU than the Core i9-7900X, however, it's a much better value for money, as it's $216.21 cheaper!
Advantages of the Core i5-8400
- Up to 74% cheaper – $76.58 vs $292.79
- A much better value for money for gaming
- Consumes up to 54% less energy – 65 vs 140 Watts
- Has an integrated GPU, while the Core i9-7900X cannot run games without a dedicated GPU
Advantages of the Core i9-7900X
- A slightly faster CPU for gaming
- Can execute more multi-threaded tasks simultaneously – 20 vs 6 threads
Core i5-8400 vs Core i9-7900X for Gaming
The CPU's performance in selected game and settings
Core i5-8400
Oct 5th, 2017
Average FPS
185
99%
Min 1% FPS
123
99%
Price, €
€76.58
100%
Value, €/FPS
€0.41/FPS
100%
Core i9-7900X
Jun 26th, 2017
Average FPS
187
100%
Min 1% FPS
124
100%
Price, €
€292.79
26%
Value, €/FPS
€1.56/FPS
26%
Core i5-8400 vs Core i9-7900X 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 i5-8400 vs Core i9-7900X in synthetic CPU benchmarks
Performance Specifications
The Core i5-8400 vs Core i9-7900X in core CPU performance specifications
Core i5-8400
Oct 5th, 2017
Cores
6-core
60%
L3 Cache
9 MB
64%
Base Frequency
2.8 GHz
85%
Turbo Frequency
4 GHz
93%
Max. DDR4 RAM Speed
2666 MHz
100%
Core i9-7900X
Jun 26th, 2017
Cores
10-core
100%
L3 Cache
14 MB
100%
Base Frequency
3.3 GHz
100%
Turbo Frequency
4.3 GHz
100%
Max. DDR4 RAM Speed
2666 MHz
100%
Specifications
Comparison of all specifications
Core i5-8400 | SpecificationsComparison of all specifications | Core i9-7900X |
|---|---|---|
| General | ||
Oct 5th, 2017 | Release Date | Jun 26th, 2017 |
$182.00 | MSRP | $999.00 |
Desktop | Segment | Desktop |
| Intel Socket 1151 | Socket | Intel Socket 2066 |
| Coffee Lake | Codename | Skylake-E/EP |
65 W | Power Consumption | 140 W |
| Performance | ||
| 6 | Cores | 10 |
| 6 | Threads | 20 |
| 2.8 GHz | Base Frequency | 3.3 GHz |
| 4.0 GHz | Turbo Frequency | 4.3 GHz |
| 9 MB | L3 Cache | 14 MB |
| Other Features | ||
| DDR4 @ 2666 MHz | RAM | DDR4 @ 2666 MHz |
UHD Graphics 630 | Integrated Graphics | No |
| No | Overclockable | Yes |
