RX 6600 vs Arc B580
Arc B580
$369.99 new
$329.95 used on eBay
See Arc B580 price on Amazon → See used listings on eBay →Price difference: $225.01 (37.8%) — the Arc B580 is cheaper. Used gap: $104.98 .
Specs compared
| Spec | RX 6600 | Arc B580 |
|---|---|---|
| Memory | 8 GB | ★ 12 GB |
| Memory type | GDDR6 | GDDR6 |
| Boost clock | 2491 MHz | ★ 2760 MHz |
| Core clock | — | — |
| TDP | 132 W | — |
| Interface | PCIe 4.0 | — |
| Length | — | — |
| New price | $595.00 | $369.99 ★ |
| Used price (eBay) | $224.97 | $329.95 |
★ indicates the better value for that spec.
Verdict
With the RX 6600 running 38% above the Arc B580 — a $225.01 premium — the two cards sit in meaningfully different price brackets. The Arc B580 wins on value unless the extra performance matters for your workload.
The Arc B580's 12 GB of VRAM is a 4 GB advantage over the RX 6600. At 4K or in heavily modded games that extra buffer matters — and it provides headroom as future titles push VRAM requirements higher.
Unless you specifically need what the RX 6600 offers, the Arc B580 is the stronger value at this price gap.
Where to buy
We may earn a commission from links on this page.
Full card details
More comparisons
Prices as of October 16, 2026. Updated daily.