Arc B580 vs RTX 3070
Arc B580
$369.99 new
$329.95 used on eBay
See Arc B580 price on Amazon → See used listings on eBay →RTX 3070
$469.99 new
$265.00 used on eBay
See RTX 3070 price on Amazon → See used listings on eBay →Price difference: $100.00 (21.3%) — the Arc B580 is cheaper. Used gap: $64.95 .
Specs compared
| Spec | Arc B580 | RTX 3070 |
|---|---|---|
| Memory | ★ 12 GB | 8 GB |
| Memory type | GDDR6 | GDDR6 |
| Boost clock | ★ 2760 MHz | 1725 MHz |
| Core clock | — | — |
| TDP | — | 220 W |
| Interface | — | PCIe 4.0 |
| Length | — | — |
| New price | $369.99 ★ | $469.99 |
| Used price (eBay) | $329.95 | $265.00 |
★ indicates the better value for that spec.
Verdict
With the RTX 3070 running 21% above the Arc B580 — a $100.00 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 Arc B580's 12 GB of VRAM is a 4 GB advantage over the RTX 3070. 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 RTX 3070 offers, the Arc B580 is the stronger value at this price gap.
Where to buy
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Prices as of October 16, 2026. Updated daily.