The Core i9-9940X is a much faster gaming CPU than the Core i5-6400, however, it's a much worse value for money, as it's $1104.25 more expensive!
Advantages of the Core i9-9940X
- A much faster CPU for gaming
- Can execute more multi-threaded tasks simultaneously – 28 vs 4 threads
Advantages of the Core i5-6400
- Up to 95% cheaper – $56.90 vs $1161.15
- A much better value for money for gaming
- Consumes up to 61% less energy – 65 vs 165 Watts
- Has an integrated GPU, while the Core i9-9940X cannot run games without a dedicated GPU
Core i9-9940X vs Core i5-6400 for Gaming
The CPU's performance in selected game and settings
Core i9-9940X
Oct 19th, 2018
Average FPS
187
100%
Min 1% FPS
124
100%
Price, €
€1161.15
4%
Value, €/FPS
€6.2/FPS
5%
Core i5-6400
Jul 2nd, 2015
Average FPS
180
96%
Min 1% FPS
120
97%
Price, €
€56.9
100%
Value, €/FPS
€0.31/FPS
100%
Core i9-9940X vs Core i5-6400 in My Games
The FPS you'll get in saved games
The FPS you'll get in saved games
Add a Game
Select Settings
Synthetic Benchmarks
The Core i9-9940X vs Core i5-6400 in synthetic CPU benchmarks
Performance Specifications
The Core i9-9940X vs Core i5-6400 in core CPU performance specifications
Core i9-9940X
Oct 19th, 2018
Cores
14-core
100%
L3 Cache
19.25 MB
100%
Base Frequency
3.3 GHz
100%
Turbo Frequency
4.4 GHz
100%
Max. DDR4 RAM Speed
2666 MHz
100%
Core i5-6400
Jul 2nd, 2015
Cores
4-core
29%
L3 Cache
6 MB
31%
Base Frequency
2.7 GHz
82%
Turbo Frequency
3.3 GHz
75%
Max. DDR4 RAM Speed
2133 MHz
80%
Specifications
Comparison of all specifications
Core i9-9940X | SpecificationsComparison of all specifications | Core i5-6400 |
|---|---|---|
| General | ||
Oct 19th, 2018 | Release Date | Jul 2nd, 2015 |
| $1,387.00 | MSRP | $182.00 |
Desktop | Segment | Desktop |
| Intel Socket 2066 | Socket | Intel Socket 1151 |
| Skylake | Codename | Skylake |
| 165 W | Power Consumption | 65 W |
| Performance | ||
14 | Cores | 4 |
28 | Threads | 4 |
3.3 GHz | Base Frequency | 2.7 GHz |
4.4 GHz | Turbo Frequency | 3.3 GHz |
19.25 MB | L3 Cache | 6 MB |
| Other Features | ||
| DDR4 @ 2666 MHz | RAM | DDR4 @ 2133 MHz |
| No | Integrated Graphics | HD Graphics 530 |
Yes | Overclockable | No |
