Arc B580 12GB vs Titan X Pascal 12GB for Local LLMs
The Titan X Pascal 12GB has about 5% more memory bandwidth (480 vs 456 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 5% faster on the Titan X Pascal 12GB. Both fit the same number of catalog models at Q4/8K (18 of 69; 12 vs 12 GB VRAM). MSRP is $249 for the Arc B580 12GB vs $1,200 for the Titan X Pascal 12GB. 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 (41 shared models), the Titan X Pascal 12GB posts the higher tok/s in 41 rows vs 0. Methodology.