The L40S 48GB has about 32% more memory bandwidth (864 vs 652.8 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 32% faster on the L40S 48GB. The L40S 48GB fits more of the catalog at Q4/8K — 41 vs 18 of 69 models (48 vs 12 GB VRAM). Largest model that fits the L40S 48GB but not the Titan V 12GB: Qwen3-Next-80B-A3B-Instruct (81.3B). MSRP is $8,000 for the L40S 48GB vs $2,999 for the Titan V 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 L40S 48GB posts the higher tok/s in 32 rows vs 9. Methodology.