Hardware 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 69 tracked models each one can run.
Scroll sideways to compare both machines. Keyboard: focus the table, then use the arrow keys. Metric names stay visible.
| Hardware | AMD RX 7900 XTX (24GB) | Intel Arc B580 (12GB) |
|---|---|---|
| Memory | 24.0 GB (better for this comparison) | 12.0 GB |
| Bandwidth | 960 GB/s (better for this comparison) | 456 GB/s |
| Price (approx) | $949GPU only · host PC required, sold separately | $289 (better for this comparison)GPU only · host PC required, sold separately |
| LLMs it runs | 51 of 69 (better for this comparison) | 30 of 69 |
| Best model it runs | Gemma 4 31BQ3_K_M · estimated 40–60 tok/s | Mistral Small 3.2 24BQ2_K · estimated 32–48 tok/s |
Both prices cover GPU cards only. A host PC is required and its cost is excluded. Prices are approximate catalog estimates; check current configurations and prices before buying.
The recommended models and quants differ. These estimated speeds are not a like-for-like comparison. Estimates use 4,096 context tokens, llama.cpp and one stream.
The AMD RX 7900 XTX (24GB) runs 21 more of the tracked models (51 vs 30), thanks to its 24.0 GB of memory. The AMD RX 7900 XTX (24GB) has more memory bandwidth (960 GB/s). Higher bandwidth can help generation speed, but model, quant, architecture and runtime also affect the estimates.