Arc A770 16GB vs Arc B580 for Local AI
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Which GPU is better for local AI workloads?
The A770 16GB carries 16GB VRAM and 560 GB/s bandwidth; the B580 has 12GB and 456 GB/s at $249 versus $349. For LLM capacity the A770's 16GB holds 14B at Q8 while the B580 stops at 12B. Driver maturity improved greatly on both by 2026; neither matches NVIDIA for tool compatibility.
Spec comparison: what actually differs
The table below is computed live from our hardware database. Positive deltas favor the Arc A770 16GB.
| Specification | Arc A770 16GB | Arc B580 | Difference |
|---|---|---|---|
| VRAM | 16 | 12 | +33% |
| Memory bandwidth | 560 | 456 | +23% |
| Memory type | GDDR6 | GDDR6 | — |
| Memory bus | 256 | 192 | — |
| TDP | 225 | 190 | +18% |
| Architecture | Alchemist | Battlemage | — |
| Launch MSRP | $349 | $249 | +40% |
| Street price | $349 | $249 | +40% |
What about price?
Which one should you buy for LLMs and image generation?
Arc A770 16GB
Buy a discounted A770 16GB for 14B-class models on a budget.
Full specs & benchmarks →Arc B580
Buy the B580 for a current, cheaper, cooler (190W vs 225W) card.
Full specs & benchmarks →Is it faster for LLM inference?
A770's 16GB + 560 GB/s is the stronger LLM combination if you find one cheap; production has wound down.
How does it handle image generation?
Both run SDXL via IPEX-UX; A770's capacity gives batching headroom.
Which AI models fit on each card?
Computed from our model VRAM database at Q4 quantization: Arc A770 16GB has 16 GB, Arc B580 has 12 GB.
Fit only on the Arc A770 16GB (16 GB)
Fit on both cards
Frequently asked questions
A770 16GB or B580 for LLMs?
A770: 16GB holds 14B models at Q8 and 560 GB/s bandwidth beats B580's 456. B580 wins on price, availability, and efficiency.