Core i9-13900K + RTX 3070: bottleneck check
GPU-limited at 1440p. GPU-bound (normal).
The RTX 3070 is the part working hardest at 1440p, which is what you want. The Core i9-13900K keeps about 30% in reserve.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 23% | GPU-bound (normal) |
| 1440p | GPU | 30% | GPU-bound (normal) |
| 4K | GPU | 45% | CPU overkill |
The RTX 3070 is the limit at every resolution and by a wide margin at 4K (45%). The Core i9-13900K is overkill for this card: a faster GPU would give you far more frames than any CPU change.
Specifications
| Cores / threads | 24 / 32 |
|---|---|
| Max boost | 5.8 GHz |
| Socket | LGA1700 |
| Max turbo power | 253 W |
| Released | 2022 |
| Gaming index | 85 / 100 |
| Multi-core index | 93 / 100 |
| VRAM | 8 GB |
|---|---|
| Board power | 220 W |
| Released | 2020 |
| 1080p index | 39.0 / 100 |
| 1440p index | 33 / 100 |
| 4K index | 27.9 / 100 |
Power supply
CPU 253 W + GPU 220 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 573 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 (LGA1700)
- Core i3-13100F + RTX 3070 (gaming index 60)
- Core i5-12400F + RTX 3070 (gaming index 66)
- Core i5-13400F + RTX 3070 (gaming index 70)
GPUs that use the Core i9-13900K more fully
- Core i9-13900K + RTX 5080 (1440p index 72)
- Core i9-13900K + RTX 4090 (1440p index 82)
- Core i9-13900K + RX 7900 XTX (1440p index 66)
Best CPU for the RTX 3070 Best GPU for the Core i9-13900K RTX 3070 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.