Core Ultra 9 285K + 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 9 285K keeps about 32% in reserve.
By resolution
| Resolution | Limiting part | Severity | Verdict |
|---|---|---|---|
| 1080p | GPU | 25% | GPU-bound (normal) |
| 1440p | GPU | 32% | GPU-bound (normal) |
| 4K | GPU | 47% | CPU overkill |
The Arc B580 is the limit at every resolution and by a wide margin at 4K (47%). The Core Ultra 9 285K is overkill for this card: a faster GPU would give you far more frames than any CPU change.
Specifications
| Cores / threads | 24 / 24 |
|---|---|
| Max boost | 5.7 GHz |
| Socket | LGA1851 |
| Max turbo power | 250 W |
| Released | 2024 |
| Gaming index | 84 / 100 |
| Multi-core index | 97 / 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 (LGA1851)
- Core Ultra 5 245K + Arc B580 (gaming index 76)
- Core Ultra 7 265K + Arc B580 (gaming index 80)
GPUs that use the Core Ultra 9 285K more fully
- Core Ultra 9 285K + RTX 5080 (1440p index 72)
- Core Ultra 9 285K + RX 7900 XTX (1440p index 66)
- Core Ultra 9 285K + RTX 4080 Super (1440p index 64)
Best CPU for the Arc B580 Best GPU for the Core Ultra 9 285K Arc B580 PSU requirements
Compare nearby pairs
Same CPU, other GPUs
Indexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.