GPU head-to-head · curated specs + live pool data
RTX 4090VSArc B580
Specifications
| RTX 4090 | Arc B580 | |
|---|---|---|
| VRAM | 24 GB GDDR6X | 12 GB GDDR6 |
| Memory bus | 384-bit | 192-bit |
| TBP | 450 W | 190 W |
| PCIe | Gen 4 | Gen 4 |
| Local AI (Q4 fit) | 32B · ~113 tok/s @8B | 14B · ~51 tok/s @8B |
Live benchmark data
Not enough verified runs yet for a fair pool verdict — averages appear once each side has at least five.
Verdict — RTX 4090
If you already have one, keep it — it's still a top-tier card. If you're shopping used, weigh it against a new 5080; the used discount needs to be significant to justify the older architecture.
Verdict — Arc B580
Intel finally got graphics right. The B580 is genuinely competitive on price/performance and 12 GB helps it age. Drivers are much improved but occasional oddity remains.