The FX-8120 is at least 2x slower gaming CPU than the Ryzen 9 3900XT, however, it's a slightly better value for money, as it's $296.98 cheaper!
Advantages of the FX-8120
- Up to 79% cheaper – $78.02 vs $375.00
- A slightly better value for money for gaming
- Can run games without a dedicated GPU as it has integrated graphics
Advantages of the Ryzen 9 3900XT
- 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
FX-8120 vs Ryzen 9 3900XT for Gaming
The CPU's performance in selected game and settings
Ryzen 9 3900XT
Jul 7th, 2020
Average FPS
193
100%
Min 1% FPS
127
100%
Price, $
$375
20%
Value, $/FPS
$1.94/FPS
24%
FX-8120 vs Ryzen 9 3900XT 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
Very High
1920x1080
+2
Average FPS
Average FPS
Very High
1920x1080
Average FPS
Average FPS
Ultra
1920x1080
+2
Average FPS
Average FPS
Best Looking
1920x1080
Average FPS
Average FPS
High
1920x1080
+1
Average FPS
Average FPS
Add a Game
Select Settings
Synthetic Benchmarks
The FX-8120 vs Ryzen 9 3900XT in synthetic CPU benchmarks
Performance Specifications
The FX-8120 vs Ryzen 9 3900XT in core CPU performance specifications
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
72%
Max. DDR3 RAM Speed
MHz
Ryzen 9 3900XT
Jul 7th, 2020
Cores
12-core
100%
L3 Cache
64 MB
100%
Base Frequency
3.8 GHz
100%
Turbo Frequency
4.7 GHz
100%
Max. DDR4 RAM Speed
3200 MHz
100%
Specifications
Comparison of all specifications
FX-8120 | SpecificationsComparison of all specifications | Ryzen 9 3900XT |
|---|---|---|
| General | ||
| Oct 12th, 2011 | Release Date | Jul 7th, 2020 |
| Not Available | MSRP | $499.00 |
Desktop | Segment | Desktop |
| AMD Socket AM3+ | Socket | AMD Socket AM4 |
| Zambezi | Codename | Matisse |
| 125 W | Power Consumption | 105 W |
| Performance | ||
| 8 | Cores | 12 |
| 8 | Threads | 24 |
| 3.1 GHz | Base Frequency | 3.8 GHz |
| 3.4 GHz | Turbo Frequency | 4.7 GHz |
| 8 MB | L3 Cache | 64 MB |
| Other Features | ||
| DDR3 | RAM | DDR4 @ 3200 MHz |
On certain motherboards (Chipset feature) | Integrated Graphics | No |
| Yes | Overclockable | Yes |
