Core i7-11700K + RTX 4080: bottleneck check
CPU-limited at 1440p. Mild CPU bottleneck.
The Core i7-11700K cannot feed the RTX 4080 fast enough at 1440p, so the card sits partly idle in CPU-heavy games.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | CPU | 26% | moderate CPU bottleneck |
| 1440p | CPU | 20% | mild CPU bottleneck |
| 4K | GPU | 2% | balanced |
This is the classic pattern: at 1080p the Core i7-11700K is the limit (26%), while at 4K the RTX 4080 takes over (2% GPU-limited). If you play at 1080p on a high-refresh monitor, a faster CPU is the upgrade that matters; at 1440p or 4K this pair is already well matched.
Specifications
| Cores / threads | 8 / 16 |
|---|---|
| Max boost | 5.0 GHz |
| Socket | LGA1200 |
| Max turbo power | 125 W |
| Released | 2021 |
| Gaming index | 62 / 100 |
| Multi-core index | 54 / 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
CPU 125 W + GPU 320 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 545 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.
Best CPU for the RTX 4080 Best GPU for the Core i7-11700K RTX 4080 PSU requirements
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Same CPU, other GPUs
Indexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.