Radeon RX 7800 XT vs Arc B580
Radeon RX 7800 XT
$599.99 new
$450.00 used on eBay
See Radeon RX 7800 XT price on Amazon → See used listings on eBay →Arc B580
$369.99 new
$309.99 used on eBay
See Arc B580 price on Amazon → See used listings on eBay →Price difference: $230.00 (38.3%) — the Arc B580 is cheaper. Used gap: $140.01 .
Specs compared
| Spec | Radeon RX 7800 XT | Arc B580 |
|---|---|---|
| Memory | ★ 16 GB | 12 GB |
| Memory type | GDDR6 | GDDR6 |
| Boost clock | 2124 MHz | ★ 2760 MHz |
| Core clock | — | — |
| TDP | — | — |
| Interface | — | — |
| Length | — | — |
| New price | $599.99 | $369.99 ★ |
| Used price (eBay) | $450.00 | $309.99 |
★ indicates the better value for that spec.
Verdict
With the Radeon RX 7800 XT running 38% above the Arc B580 — a $230.00 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 7800 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.
Unless you specifically need what the Radeon RX 7800 XT offers, the Arc B580 is the stronger value at this price gap.
Where to buy
Radeon RX 7800 XT
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Prices as of July 22, 2026. Updated daily.