The Ryzen 9 3900X is at least 2x faster gaming CPU than the FX-8120, however, it's a slightly worse value for money, as it's $254.03 more expensive!
Advantages of the Ryzen 9 3900X
- At least 2x faster CPU for gaming
- Consumes up to 16% less energy – 105 vs 125 Watts
- Can execute more multi-threaded tasks simultaneously – 24 vs 8 threads
Advantages of the FX-8120
- Up to 78% cheaper – $70.29 vs $324.32
- A slightly better value for money for gaming
- Can run games without a dedicated GPU as it has integrated graphics
Ryzen 9 3900X vs FX-8120 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, €
€324.32
21%
Value, €/FPS
€1.68/FPS
25%
Ryzen 9 3900X vs FX-8120 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
Add a Game
Select Settings
Synthetic Benchmarks
The Ryzen 9 3900X vs FX-8120 in synthetic CPU benchmarks
Performance Specifications
The Ryzen 9 3900X vs FX-8120 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%
FX-8120
Oct 12th, 2011
Cores
8-core
67%
L3 Cache
8 MB
12%
Base Frequency
3.1 GHz
82%
Turbo Frequency
3.4 GHz
74%
Max. DDR3 RAM Speed
MHz
Specifications
Comparison of all specifications
Ryzen 9 3900X | SpecificationsComparison of all specifications | FX-8120 |
|---|---|---|
| General | ||
Jul 7th, 2019 | Release Date | Oct 12th, 2011 |
| $499.00 | MSRP | Not Available |
Desktop | Segment | Desktop |
| AMD Socket AM4 | Socket | AMD Socket AM3+ |
| Matisse | Codename | Zambezi |
105 W | Power Consumption | 125 W |
| Performance | ||
12 | Cores | 8 |
24 | Threads | 8 |
3.8 GHz | Base Frequency | 3.1 GHz |
4.6 GHz | Turbo Frequency | 3.4 GHz |
64 MB | L3 Cache | 8 MB |
| Other Features | ||
| DDR4 @ 3200 MHz | RAM | DDR3 |
| No | Integrated Graphics | On certain motherboards (Chipset feature) |
| Yes | Overclockable | Yes |
