RX 580 vs RX 6600
Specs compared
| Spec | RX 580 | RX 6600 |
|---|---|---|
| Memory | 8 GB | 8 GB |
| Memory type | GDDR5 | GDDR6 |
| Boost clock | 1340 MHz | ★ 2491 MHz |
| Core clock | — | — |
| TDP | 185 W | ★ 132 W |
| Interface | PCIe 3.0 | PCIe 4.0 |
| Length | — | — |
| New price | — | — |
| Used price (eBay) | $65.00 | $194.99 |
★ indicates the better value for that spec.
Verdict
The RX 580 and RX 6600 land at effectively the same price so your decision should come down to features, ecosystem fit, and availability rather than budget.
Either card is a reasonable buy at this price level — availability and any bundled promotions should tip the decision.
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Prices as of July 17, 2026. Updated daily.