The Core i5-6400 is a slower gaming CPU than the Core i9-9940X, however, it's a much better value for money, as it's $1241.91 cheaper!
Advantages of the Core i5-6400
- Up to 96% cheaper – $46.97 vs $1288.88
- 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
Advantages of the Core i9-9940X
- A faster CPU for gaming
- Can execute more multi-threaded tasks simultaneously – 28 vs 4 threads
Core i5-6400 vs Core i9-9940X
The CPU's performance in selected game and settings
Core i5-6400
Jul 2nd, 2015
Average FPS
195
97%
Min 1% FPS
134
97%
Price, $
$46.97
100%
Value, $/FPS
$0.24/FPS
100%
Core i9-9940X
Oct 19th, 2018
Average FPS
201
100%
Min 1% FPS
138
100%
Price, $
$1288.88
3%
Value, $/FPS
$6.41/FPS
4%
Synthetic Benchmarks
The Core i5-6400 vs Core i9-9940X in synthetic CPU benchmarks
Performance Specifications
The Core i5-6400 vs Core i9-9940X in core CPU performance specifications
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
73%
Max. DDR4 RAM Speed
2133 MHz
80%
Core i9-9940X
Oct 19th, 2018
Cores
14-core
100%
L3 Cache
19.25 MB
100%
Base Frequency
3.3 GHz
100%
Turbo Frequency
4.5 GHz
100%
Max. DDR4 RAM Speed
2666 MHz
100%
Specifications
Comparison of all specifications
Core i5-6400 | SpecificationsComparison of all specifications | Core i9-9940X |
|---|---|---|
| General | ||
| Jul 2nd, 2015 | Release Date | Oct 19th, 2018 |
$182.00 | MSRP | $1,387.00 |
Desktop | Segment | Desktop |
| Intel Socket 1151 | Socket | Intel Socket 2066 |
| Skylake | Codename | Skylake-X |
65 W | Power Consumption | 165 W |
| Performance | ||
| 4 | Cores | 14 |
| 4 | Threads | 28 |
| 2.7 GHz | Base Frequency | 3.3 GHz |
| 3.3 GHz | Turbo Frequency | 4.5 GHz |
| 6 MB | L3 Cache | 19.25 MB |
| Other Features | ||
| DDR4 @ 2133 MHz | RAM | DDR4 @ 2666 MHz |
HD Graphics 530 | Integrated Graphics | No |
| No | Overclockable | Yes |
