Core i9-13900K + RTX 4070: bottleneck check
GPU-limited at 1440p. GPU-bound (normal).
The RTX 4070 is the part working hardest at 1440p, which is what you want. The Core i9-13900K keeps about 23% in reserve.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 16% | balanced |
| 1440p | GPU | 23% | GPU-bound (normal) |
| 4K | GPU | 40% | GPU-bound (normal) |
The RTX 4070 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 | 24 / 32 |
|---|---|
| Max boost | 5.8 GHz |
| Socket | LGA1700 |
| Maximum turbo power (MTP) | 253 W Intel's published maximum sustained turbo power, above its base power; the PSU estimate uses it, so it errs high · Intel ARK |
| Released | 2022 |
| Gaming index | 85 / 100 |
| Multi-core index | 93 / 100 |
| VRAM | 12 GB |
|---|---|
| Board power | 200 W |
| Released | 2023 |
| 1080p index | 47.8 / 100 |
| 1440p index | 42 / 100 |
| 4K index | 36.9 / 100 |
Power supply
The RTX 4070 measured 201 W average while gaming (235 W highest 20 ms spike, TechPowerUp). With the Core i9-13900K at its maximum turbo power of 253 W and about 75 W for the rest of the system, the sustained load is about 529 W. A 750 W unit is the safe choice. Details on the RTX 4070 PSU page or try other pairs in the PSU calculator.
Upgrade paths
CPUs that remove the bottleneck
LGA1700Cards that use the Core i9-13900K fully
Best CPU for the RTX 4070 Best GPU for the Core i9-13900K RTX 4070 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.