The Ryzen 9 3900X is a faster gaming CPU than the Core i5-8400, however, it's a much worse value for money, as it's CA$370.00 more expensive!
Advantages of the Ryzen 9 3900X
- A faster CPU for gaming
- Can execute more multi-threaded tasks simultaneously – 24 vs 6 threads
Advantages of the Core i5-8400
- Up to 68% cheaper – CA$175.00 vs CA$545.00
- A much better value for money for gaming
- Consumes up to 38% less energy – 65 vs 105 Watts
- Has an integrated GPU, while the Ryzen 9 3900X cannot run games without a dedicated GPU
Ryzen 9 3900X vs Core i5-8400 for Gaming
The CPU's performance in selected game and settings
Ryzen 9 3900X
Jul 7th, 2019
Average FPS
192
100%
Min 1% FPS
127
100%
Price, CA$
CA$545
32%
Value, CA$/FPS
CA$2.83/FPS
33%
Core i5-8400
Oct 5th, 2017
Average FPS
185
96%
Min 1% FPS
123
97%
Price, CA$
CA$175
100%
Value, CA$/FPS
CA$0.94/FPS
100%
Ryzen 9 3900X vs Core i5-8400 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 Ryzen 9 3900X vs Core i5-8400 in synthetic CPU benchmarks
Performance Specifications
The Ryzen 9 3900X vs Core i5-8400 in core CPU performance specifications
Ryzen 9 3900X
Jul 7th, 2019
Cores
12-core
100%
L3 Cache
64 MB
100%
Base Frequency
3.8 GHz
100%
Turbo Frequency
4.6 GHz
100%
Max. DDR4 RAM Speed
3200 MHz
100%
Core i5-8400
Oct 5th, 2017
Cores
6-core
50%
L3 Cache
9 MB
14%
Base Frequency
2.8 GHz
74%
Turbo Frequency
4 GHz
87%
Max. DDR4 RAM Speed
2666 MHz
83%
Specifications
Comparison of all specifications
Ryzen 9 3900X | SpecificationsComparison of all specifications | Core i5-8400 |
|---|---|---|
| General | ||
Jul 7th, 2019 | Release Date | Oct 5th, 2017 |
| $499.00 | MSRP | $182.00 |
Desktop | Segment | Desktop |
| AMD Socket AM4 | Socket | Intel Socket 1151 |
| Matisse | Codename | Coffee Lake |
| 105 W | Power Consumption | 65 W |
| Performance | ||
12 | Cores | 6 |
24 | Threads | 6 |
3.8 GHz | Base Frequency | 2.8 GHz |
4.6 GHz | Turbo Frequency | 4.0 GHz |
64 MB | L3 Cache | 9 MB |
| Other Features | ||
| DDR4 @ 3200 MHz | RAM | DDR4 @ 2666 MHz |
| No | Integrated Graphics | UHD Graphics 630 |
Yes | Overclockable | No |
