Core Ultra 7 265K + Arc B580: bottleneck check
GPU-limited at 1440p. GPU-bound (normal).
The Arc B580 is the part working hardest at 1440p, which is what you want. The Core Ultra 7 265K keeps about 28% in reserve.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 21% | GPU-bound (normal) |
| 1440p | GPU | 28% | GPU-bound (normal) |
| 4K | GPU | 44% | CPU overkill |
The Arc B580 is the limit at every resolution and by a wide margin at 4K (44%). The Core Ultra 7 265K is overkill for this card: a faster GPU would give you far more frames than any CPU change.
Specifications
| Cores / threads | 20 / 20 |
|---|---|
| Max boost | 5.5 GHz |
| Socket | LGA1851 |
| Max turbo power | 250 W |
| Released | 2024 |
| Gaming index | 80 / 100 |
| Multi-core index | 90 / 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
CPU 250 W + GPU 190 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 540 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.
Upgrade paths
CPUs that remove the bottleneck
LGA1851Cards that use the Core Ultra 7 265K fully
Best CPU for the Arc B580 Best GPU for the Core Ultra 7 265K 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.