The Core i7-7700K is a faster gaming CPU than the Core i5-8400, however, it's a slightly worse value for money, as it's £28.00 more expensive!
Advantages of the Core i7-7700K
- A faster CPU for gaming
- Can execute more multi-threaded tasks simultaneously – 8 vs 6 threads
Advantages of the Core i5-8400
- Up to 16% cheaper – £148.66 vs £176.66
- A slightly better value for money for gaming
- Consumes up to 29% less energy – 65 vs 91 Watts
Core i7-7700K vs Core i5-8400 for Gaming
The CPU's performance in selected game and settings
Core i7-7700K
Jan 3rd, 2017
Average FPS
190
100%
Min 1% FPS
126
100%
Price, £
£176.66
84%
Value, £/FPS
£0.92/FPS
87%
Core i5-8400
Oct 5th, 2017
Average FPS
185
97%
Min 1% FPS
123
98%
Price, £
£148.66
100%
Value, £/FPS
£0.8/FPS
100%
Core i7-7700K vs Core i5-8400 in My Games
The FPS you'll get in saved games
The FPS you'll get in saved games
Add a Game
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Synthetic Benchmarks
The Core i7-7700K vs Core i5-8400 in synthetic CPU benchmarks
Performance Specifications
The Core i7-7700K vs Core i5-8400 in core CPU performance specifications
Core i7-7700K
Jan 3rd, 2017
Cores
4-core
67%
L3 Cache
8 MB
89%
Base Frequency
4.2 GHz
100%
Turbo Frequency
4.5 GHz
100%
Max. DDR4 RAM Speed
2400 MHz
90%
Core i5-8400
Oct 5th, 2017
Cores
6-core
100%
L3 Cache
9 MB
100%
Base Frequency
2.8 GHz
67%
Turbo Frequency
4 GHz
89%
Max. DDR4 RAM Speed
2666 MHz
100%
Specifications
Comparison of all specifications
Core i7-7700K | SpecificationsComparison of all specifications | Core i5-8400 |
|---|---|---|
| General | ||
| Jan 3rd, 2017 | Release Date | Oct 5th, 2017 |
| Not Available | MSRP | $182.00 |
Desktop | Segment | Desktop |
| Intel Socket 1151 | Socket | Intel Socket 1151 |
| Kaby Lake | Codename | Coffee Lake |
| 91 W | Power Consumption | 65 W |
| Performance | ||
| 4 | Cores | 6 |
8 | Threads | 6 |
4.2 GHz | Base Frequency | 2.8 GHz |
4.5 GHz | Turbo Frequency | 4.0 GHz |
| 8 MB | L3 Cache | 9 MB |
| Other Features | ||
| DDR4 @ 2400 MHz | RAM | DDR4 @ 2666 MHz |
| HD 630 | Integrated Graphics | UHD Graphics 630 |
Yes | Overclockable | No |
