Radeon RX 9070 XT vs Arc B580
Arc B580
$369.99 new
$265.00 used on eBay
See Arc B580 price on Amazon → See used listings on eBay →Price difference: $280.00 (43.1%) — the Arc B580 is cheaper.
Specs compared
| Spec | Radeon RX 9070 XT | Arc B580 |
|---|---|---|
| Memory | ★ 16 GB | 12 GB |
| Memory type | GDDR6 | GDDR6 |
| Boost clock | ★ 3060 MHz | 2760 MHz |
| Core clock | — | — |
| TDP | — | — |
| Interface | PCIe 5.0 | — |
| Length | — | — |
| New price | $649.99 | $369.99 ★ |
| Used price (eBay) | — | $265.00 |
★ indicates the better value for that spec.
Verdict
With the Radeon RX 9070 XT running 43% above the Arc B580 — a $280.00 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 Radeon RX 9070 XT's 16 GB of VRAM is a 4 GB advantage over the Arc B580. At 4K or in heavily modded games that extra buffer matters — and it provides headroom as future titles push VRAM requirements higher.
Budget-conscious buyers have an extra option: the Arc B580 can be found used on eBay around $265.00, roughly $104.99 below its new street price. If you're comfortable buying used, that saving could shift the value equation between these two cards.
Unless you specifically need what the Radeon RX 9070 XT offers, the Arc B580 is the stronger value at this price gap.
Where to buy
Radeon RX 9070 XT
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Full card details
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Prices as of June 10, 2026. Updated daily.