Ryzen 9 7900X + Arc A750: bottleneck check
GPU-limited at 1440p. GPU-bound (normal).
The Arc A750 is the part working hardest at 1440p, which is what you want. The Ryzen 9 7900X keeps about 34% in reserve.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 27% | GPU-bound (normal) |
| 1440p | GPU | 34% | GPU-bound (normal) |
| 4K | GPU | 49% | CPU overkill |
The Arc A750 is the limit at every resolution and by a wide margin at 4K (49%). The Ryzen 9 7900X is overkill for this card: a faster GPU would give you far more frames than any CPU change.
Specifications
| Cores / threads | 12 / 24 |
|---|---|
| Max boost | 5.6 GHz |
| Socket | AM5 |
| TDP | 170 W manufacturer-published TDP — sustained turbo can be higher · AMD |
| Released | 2022 |
| Gaming index | 81 / 100 |
| Multi-core index | 86 / 100 |
| VRAM | 8 GB |
|---|---|
| Board power | 225 W |
| Released | 2022 |
| 1080p index | 28.7 / 100 |
| 1440p index | 23 / 100 |
| 4K index | 18.4 / 100 |
Power supply
The Arc A750 measured 203 W average while gaming (255 W highest 20 ms spike, TechPowerUp). With the Ryzen 9 7900X at its TDP of 170 W and about 75 W for the rest of the system, the sustained load is about 448 W. A 650 W unit is the safe choice. Details on the Arc A750 PSU page or try other pairs in the PSU calculator.
Upgrade paths
CPUs that remove the bottleneck
AM5Cards that use the Ryzen 9 7900X fully
Best CPU for the Arc A750 Best GPU for the Ryzen 9 7900X Arc A750 PSU requirements
Same CPU, other cards
AllSame card, other CPUs
AllIndexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.