GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The Arc B580 is noticeably faster than the Arc A580, leading by roughly 9% in our performance index. It is also the stronger value pick here, so it's the easy recommendation if your budget allows.
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Arc B580 vs Arc A580: In-Depth Breakdown
Performance: Arc B580 vs Arc A580
The Arc B580 is noticeably faster, around 9% ahead of the Arc A580. Both cards sit in the same broad class, well suited to 1080p.
Price & Value
Right now the Arc A580 starts at $279 GBP against $289 GBP for the Arc B580. Because it's both faster and competitively priced, the Arc B580 wins on performance-per-dollar by about 5%. The Arc A580 still sits about $100 GBP above its $179 GBP MSRP.
Power & Efficiency
The Arc A580 pulls less power (175W vs 190W), so it's the easier card to cool and the lighter load on your PSU. The faster Arc B580 draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it. Its more modern Battlemage architecture on a TSMC N5 process is part of why it does more with each watt.
VRAM & Future-Proofing
With 12GB against 8GB, the Arc B580 has more headroom for 4K textures and memory-hungry creative/AI tasks where the Arc A580's 8GB can fall short. The Arc A580's memory is also faster — 512 GB/s versus 456 GB/s (256-bit vs 192-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Which should you buy: Arc A580 or Arc B580?
The Arc B580 is the all-round winner here — it's faster and the better value, so buy it if it fits your budget. Only consider the Arc A580 if you find it at a steep discount.