Arc B580 vs RTX 3080
Arc B580
$369.99 new
$329.95 used on eBay
See Arc B580 price on Amazon → See used listings on eBay →RTX 3080
$700.00 new
$400.00 used on eBay
See RTX 3080 price on Amazon → See used listings on eBay →Price difference: $330.01 (47.1%) — the Arc B580 is cheaper. Used gap: $70.05 .
Specs compared
| Spec | Arc B580 | RTX 3080 |
|---|---|---|
| Memory | ★ 12 GB | 10 GB |
| Memory type | GDDR6 | GDDR6X |
| Boost clock | ★ 2760 MHz | 1710 MHz |
| Core clock | — | — |
| TDP | — | 320 W |
| Interface | — | PCIe 4.0 |
| Length | — | — |
| New price | $369.99 ★ | $700.00 |
| Used price (eBay) | $329.95 | $400.00 |
★ indicates the better value for that spec.
Verdict
With the RTX 3080 running 47% above the Arc B580 — a $330.01 premium — the two cards sit in meaningfully different price brackets. The Arc B580 wins on value unless the extra performance matters for your workload.
Unless you specifically need what the RTX 3080 offers, the Arc B580 is the stronger value at this price gap.
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Prices as of October 16, 2026. Updated daily.