Core i7-11700K + RTX 4070: bottleneck check
Balanced at 1440p.
Well matched at 1440p. The Core i7-11700K is the slightly busier part, by about 5%.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | CPU | 13% | mild CPU bottleneck |
| 1440p | CPU | 5% | balanced |
| 4K | GPU | 18% | balanced |
This is the classic pattern: at 1080p the Core i7-11700K is the limit (13%), while at 4K the RTX 4070 takes over (18% 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 |
| TDP | 125 W manufacturer-published TDP — sustained turbo can be higher · Intel ARK |
| Released | 2021 |
| Gaming index | 62 / 100 |
| Multi-core index | 54 / 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 i7-11700K at its TDP of 125 W and about 75 W for the rest of the system, the sustained load is about 401 W. A 650 W unit is the safe choice; a good-quality 550 W unit also covers the measured draw. Details on the RTX 4070 PSU page or try other pairs in the PSU calculator.
Best CPU for the RTX 4070 Best GPU for the Core i7-11700K 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.