Core i9-13900K + RTX 4080: bottleneck check
Balanced at 1440p.
Well matched at 1440p. The RTX 4080 is the slightly busier part, by about 9%.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 2% | balanced |
| 1440p | GPU | 9% | balanced |
| 4K | GPU | 28% | GPU-bound (normal) |
The RTX 4080 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 | 16 GB |
|---|---|
| Board power | 320 W |
| Released | 2022 |
| 1080p index | 66.6 / 100 |
| 1440p index | 62 / 100 |
| 4K index | 57.7 / 100 |
Power supply
The RTX 4080 measured 304 W average while gaming (371 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 632 W. A 850 W unit is the safe choice. Details on the RTX 4080 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 4080 Best GPU for the Core i9-13900K RTX 4080 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.