Core i5-10400F + Arc B580: bottleneck check
CPU-limited at 1440p. Mild CPU bottleneck.
The Core i5-10400F cannot feed the Arc B580 fast enough at 1440p, so the card sits partly idle in CPU-heavy games.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | CPU | 21% | mild CPU bottleneck |
| 1440p | CPU | 13% | mild CPU bottleneck |
| 4K | GPU | 11% | balanced |
This is the classic pattern: at 1080p the Core i5-10400F is the limit (21%), while at 4K the Arc B580 takes over (11% 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 |
| TDP | 65 W manufacturer-published TDP — sustained turbo can be higher · Intel ARK |
| Released | 2020 |
| Gaming index | 50 / 100 |
| Multi-core index | 38 / 100 |
| VRAM | 12 GB |
|---|---|
| Board power | 190 W |
| Released | 2024 |
| 1080p index | 34.9 / 100 |
| 1440p index | 29 / 100 |
| 4K index | 24.1 / 100 |
Power supply
The Arc B580 measured 185 W average while gaming (237 W highest 20 ms spike, TechPowerUp). With the Core i5-10400F at its TDP of 65 W and about 75 W for the rest of the system, the sustained load is about 325 W. A 650 W unit is the safe choice. Details on the Arc B580 PSU page or try other pairs in the PSU calculator.
Upgrade paths
CPUs that remove the bottleneck
LGA1200Best CPU for the Arc B580 Best GPU for the Core i5-10400F Arc B580 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.