Arc B580 vs RTX 4060: Which Should You Buy?
Head-to-head on performance, VRAM, power and value for 2026.
Quick Summary · TL;DR
On our relative performance index the Arc B580 leads the RTX 4060 by about 11% — a moderate gap. The Arc B580 has more VRAM (12GB vs 8GB), which helps at high resolutions and in VRAM-hungry titles. The RTX 4060 adds NVIDIA DLSS and stronger ray tracing, while the Arc B580 typically leans on raw rasterisation value.
| Arc B580 | RTX 4060 | |
|---|---|---|
| Performance index | 40/100 | 36/100 |
| VRAM | 12GB | 8GB |
| Board power (TBP) | 190W | 115W |
| Recommended PSU | 600W | 550W |
| Power connector | 8-pin PCIe | 8-pin PCIe |
| Generation | Arc B | RTX 40 |
Relative gaming index — an estimate of typical performance. Real-world gaps vary by game, resolution and settings.
Which should you buy?
Buy the Arc B580 if you want the higher frame rate and can find it at a fair price. Choose the RTX 4060 if it is clearly cheaper and its 8GB+ of VRAM and features cover your target resolution. For ray tracing and DLSS, the NVIDIA option has the edge; for raw rasterisation per dollar, the alternative often wins.
Power planning: Arc B580 PSU · RTX 4060 PSU.
Frequently asked questions
Is the Arc B580 better than the RTX 4060?
On our relative index the Arc B580 is about 11% ahead of the RTX 4060. The Arc B580 has more VRAM (12GB vs 8GB), which helps at high resolutions and in VRAM-hungry titles. The smaller the gap, the more other factors like price, VRAM and features should decide it.
Which is better value, the Arc B580 or the RTX 4060?
Value depends on the price you can find each at. The slower card is usually the smart buy if it is meaningfully cheaper, unless you need the extra VRAM or features of the faster one.
Do the Arc B580 and RTX 4060 need different power supplies?
The Arc B580 is rated around a 600W PSU and the RTX 4060 around 550W. Size for the more demanding card if you might upgrade, and prefer an ATX 3.x unit for any 12V-2x6 card.
Make sure your CPU can keep up with either card using the Bottleneck Estimator, or compare more cards in the GPU comparison hub.