RTX A6000 48GB vs RTX 4090D 24GB (China) for Local LLMs
The RTX 4090D 24GB (China) has about 31% more memory bandwidth (1,008 vs 768 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 31% faster on the RTX 4090D 24GB (China). The RTX A6000 48GB fits more of the catalog at Q4/8K — 39 vs 33 of 61 models (48 vs 24 GB VRAM). Largest model that fits the RTX A6000 48GB but not the RTX 4090D 24GB (China): Qwen3-Coder-Next (79.7B). MSRP is $4,500 for the RTX A6000 48GB vs $1,599 for the RTX 4090D 24GB (China). MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. Not retail-shoppable: RTX 4090D 24GB (China) (datacenter-class; cloud rental is the realistic way to use it). In the Q4/8K head-to-head below (47 shared models), the RTX 4090D 24GB (China) posts the higher tok/s in 39 rows vs 8. Methodology.