The Core i9-7940X is the same performance gaming CPU as the Core i5-9400, however, it's a much worse value for money, as it's $196.40 more expensive!
Advantages of the Core i9-7940X
- Can execute more multi-threaded tasks simultaneously – 28 vs 6 threads
Advantages of the Core i5-9400
- Up to 73% cheaper – $73.87 vs $270.27
- A much better value for money for gaming
- Consumes up to 61% less energy – 65 vs 165 Watts
- Can run games without a dedicated GPU as it has integrated graphics
Core i9-7940X vs Core i5-9400 for Gaming
The CPU's performance in selected game and settings
Core i9-7940X
Sep 1st, 2017
Average FPS
206
100%
Min 1% FPS
143
100%
Price, €
€270.27
27%
Value, €/FPS
€1.31/FPS
27%
Core i5-9400
Oct 19th, 2018
Average FPS
206
100%
Min 1% FPS
143
100%
Price, €
€73.87
100%
Value, €/FPS
€0.35/FPS
100%
Core i9-7940X vs Core i5-9400 in My Games
The FPS you'll get in saved games, click on a game to change it
The FPS you'll get in saved games, click on a game to change it
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Synthetic Benchmarks
The Core i9-7940X vs Core i5-9400 in synthetic CPU benchmarks
Performance Specifications
The Core i9-7940X vs Core i5-9400 in core CPU performance specifications
Core i9-7940X
Sep 1st, 2017
Cores
14-core
100%
L3 Cache
19.25 MB
100%
Base Frequency
3.1 GHz
100%
Turbo Frequency
4.4 GHz
100%
Max. DDR4 RAM Speed
2666 MHz
100%
Core i5-9400
Oct 19th, 2018
Cores
6-core
43%
L3 Cache
9 MB
47%
Base Frequency
2.9 GHz
94%
Turbo Frequency
4.1 GHz
93%
Max. DDR4 RAM Speed
2666 MHz
100%
Specifications
Comparison of all specifications
Core i9-7940X | SpecificationsComparison of all specifications | Core i5-9400 |
|---|---|---|
| General | ||
| Sep 1st, 2017 | Release Date | Oct 19th, 2018 |
| $13.99 | MSRP | Not Available |
Desktop | Segment | Desktop |
| Intel Socket 2066 | Socket | Intel Socket 1151 |
| Skylake-X | Codename | Coffee Lake |
| 165 W | Power Consumption | 65 W |
| Performance | ||
14 | Cores | 6 |
28 | Threads | 6 |
3.1 GHz | Base Frequency | 2.9 GHz |
4.4 GHz | Turbo Frequency | 4.1 GHz |
19.25 MB | L3 Cache | 9 MB |
| Other Features | ||
| DDR4 @ 2666 MHz | RAM | DDR4 @ 2666 MHz |
| No | Integrated Graphics | UHD 630 |
Yes | Overclockable | No |
