Arc Pro B70 32GB vs RX 7600 XT 16GB for Local LLMs
The Arc Pro B70 32GB has about 111% more memory bandwidth (608 vs 288 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 111% faster on the Arc Pro B70 32GB. The Arc Pro B70 32GB fits more of the catalog at Q4/8K — 39 vs 24 of 69 models (32 vs 16 GB VRAM). Largest model that fits the Arc Pro B70 32GB but not the RX 7600 XT 16GB: Qwen3.6-35B-A3B (36.0B). MSRP is $999 for the Arc Pro B70 32GB vs $329 for the RX 7600 XT 16GB. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. In the Q4/8K head-to-head below (44 shared models), the Arc Pro B70 32GB posts the higher tok/s in 40 rows vs 4. Methodology.