RX 6700 XT vs Arc B580
RX 6700 XT
$799.00 new
$324.99 used on eBay
See RX 6700 XT price on Amazon → See used listings on eBay →Arc B580
$369.99 new
$319.99 used on eBay
See Arc B580 price on Amazon → See used listings on eBay →Price difference: $429.01 (53.7%) — the Arc B580 is cheaper. Used gap: $5.00 .
Specs compared
| Spec | RX 6700 XT | Arc B580 |
|---|---|---|
| Memory | 12 GB | 12 GB |
| Memory type | GDDR6 | GDDR6 |
| Boost clock | 2581 MHz | ★ 2760 MHz |
| Core clock | — | — |
| TDP | 230 W | — |
| Interface | PCIe 4.0 | — |
| Length | — | — |
| New price | $799.00 | $369.99 ★ |
| Used price (eBay) | $324.99 | $319.99 |
★ indicates the better value for that spec.
Verdict
With the RX 6700 XT running 54% above the Arc B580 — a $429.01 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 RX 6700 XT offers, the Arc B580 is the stronger value at this price gap.
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Prices as of October 15, 2026. Updated daily.