GPU comparison
AMD RX 7900 XTX (24GB) vs Intel Arc B580 (12GB) for local LLMs
How the two stack up for running open-source LLMs locally — memory, bandwidth, price, and how many of the 48 tracked models each one can run.
| AMD RX 7900 XTX (24GB) | Intel Arc B580 (12GB) | |
|---|---|---|
| Memory | 24.0 GB | 12.0 GB |
| Bandwidth | 960 GB/s | 456 GB/s |
| Price (approx) | $949 | $289 |
| LLMs it runs | 34 of 48 | 19 of 48 |
| Best model it runs | Gemma 4 31B · 40–60 tok/s | Devstral Small 2 24B · 32–48 tok/s |
The AMD RX 7900 XTX (24GB) runs 15 more of the tracked models (34 vs 19), thanks to its 24.0 GB of memory. The AMD RX 7900 XTX (24GB) has more memory bandwidth (960 GB/s), so it generates tokens faster at the same model and quant.