MacBook Pro M3 Max 128GB vs Titan Xp 12GB for Local LLMs
The Titan Xp 12GB has about 37% more memory bandwidth (548 vs 400 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 37% faster on the Titan Xp 12GB. The MacBook Pro M3 Max 128GB fits more of the catalog at Q4/8K — 53 vs 18 of 69 models (128 vs 12 GB VRAM). Largest model that fits the MacBook Pro M3 Max 128GB but not the Titan Xp 12GB: Step-3.5-Flash (196.8B). MSRP is $4,199 for the MacBook Pro M3 Max 128GB vs $1,200 for the Titan Xp 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 Xp 12GB posts the higher tok/s in 35 rows vs 6. Methodology.