Ryzen 7 3700X + RTX 3090: bottleneck check
CPU-limited at 1440p. Mild CPU bottleneck.
The Ryzen 7 3700X cannot feed the RTX 3090 fast enough at 1440p, so the card sits partly idle in CPU-heavy games.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | CPU | 29% | moderate CPU bottleneck |
| 1440p | CPU | 23% | mild CPU bottleneck |
| 4K | CPU | 2% | balanced |
The Ryzen 7 3700X is the limiting part at every resolution, even at 4K (2%). The RTX 3090 is a much stronger card than this processor can drive — plan a CPU upgrade before spending more on graphics.
Specifications
| Cores / threads | 8 / 16 |
|---|---|
| Max boost | 4.4 GHz |
| Socket | AM4 |
| Max turbo power | 65 W |
| Released | 2019 |
| Gaming index | 52 / 100 |
| Multi-core index | 50 / 100 |
| VRAM | 24 GB |
|---|---|
| Board power | 350 W |
| Released | 2020 |
| 1080p index | 51.7 / 100 |
| 1440p index | 46 / 100 |
| 4K index | 40.9 / 100 |
Power supply
CPU 65 W + GPU 350 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 515 W. We recommend a 750 W unit (80 Plus Gold or better) so transient spikes from the graphics card stay inside the PSU's comfort zone. Try other pairs in the PSU calculator.
Upgrade paths
CPUs that remove the bottleneck (AM4)
- Ryzen 9 5950X + RTX 3090 (gaming index 68)
- Ryzen 7 5700X3D + RTX 3090 (gaming index 74)
- Ryzen 7 5800X3D + RTX 3090 (gaming index 78)
Best CPU for the RTX 3090 Best GPU for the Ryzen 7 3700X RTX 3090 PSU requirements
Compare nearby pairs
Same CPU, other GPUs
Indexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.