Core i5-10400F + RX 6600: bottleneck check
Balanced at 1440p.
Well matched at 1440p. The Core i5-10400F is the slightly busier part, by about 5%.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | CPU | 14% | mild CPU bottleneck |
| 1440p | CPU | 5% | balanced |
| 4K | GPU | 19% | balanced |
This is the classic pattern: at 1080p the Core i5-10400F is the limit (14%), while at 4K the RX 6600 takes over (19% 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 | 6 / 12 |
|---|---|
| Max boost | 4.3 GHz |
| Socket | LGA1200 |
| Max turbo power | 65 W |
| Released | 2020 |
| Gaming index | 50 / 100 |
| Multi-core index | 38 / 100 |
| VRAM | 8 GB |
|---|---|
| Board power | 132 W |
| Released | 2021 |
| 1080p index | 26.5 / 100 |
| 1440p index | 21 / 100 |
| 4K index | 16.6 / 100 |
Power supply
CPU 65 W + GPU 132 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 297 W. We recommend a 450 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 (LGA1200)
- Core i5-11400F + RX 6600 (gaming index 56)
- Core i7-10700K + RX 6600 (gaming index 58)
- Core i7-11700K + RX 6600 (gaming index 62)
GPUs that use the Core i5-10400F more fully
- Core i5-10400F + GTX 1080 Ti (1440p index 23)
- Core i5-10400F + RX 5700 XT (1440p index 23)
- Core i5-10400F + Arc A750 (1440p index 23)
Best CPU for the RX 6600 Best GPU for the Core i5-10400F RX 6600 PSU requirements
Compare nearby pairs
Same CPU, other GPUs
Same GPU, other CPUs
Indexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.