Core i9-12900K + RX 7800 XT: bottleneck check
Balanced at 1440p.
Well matched at 1440p. The RX 7800 XT is the slightly busier part, by about 13%.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 6% | balanced |
| 1440p | GPU | 13% | balanced |
| 4K | GPU | 32% | GPU-bound (normal) |
The RX 7800 XT is the limiting part at every resolution, which is the healthy direction, and the gap is small enough that neither part is wasted. Upgrade the GPU first when you want more frames.
Specifications
| Cores / threads | 16 / 24 |
|---|---|
| Max boost | 5.2 GHz |
| Socket | LGA1700 |
| Max turbo power | 241 W |
| Released | 2021 |
| Gaming index | 78 / 100 |
| Multi-core index | 80 / 100 |
| VRAM | 16 GB |
|---|---|
| Board power | 263 W |
| Released | 2023 |
| 1080p index | 51.7 / 100 |
| 1440p index | 46 / 100 |
| 4K index | 40.9 / 100 |
Power supply
CPU 241 W + GPU 263 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 604 W. We recommend a 850 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 (LGA1700)
- Core i5-13400F + RX 7800 XT (gaming index 70)
- Core i5-12600K + RX 7800 XT (gaming index 72)
- Core i5-14400F + RX 7800 XT (gaming index 72)
GPUs that use the Core i9-12900K more fully
- Core i9-12900K + RTX 4080 Super (1440p index 64)
- Core i9-12900K + RTX 5070 Ti (1440p index 62)
- Core i9-12900K + RTX 4080 (1440p index 62)
Best CPU for the RX 7800 XT Best GPU for the Core i9-12900K RX 7800 XT 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.