MacBook Neo A18 Pro 8GB vs RX 7800 XT 16GB for Local LLMs
The RX 7800 XT 16GB has about 940% more memory bandwidth (624 vs 60 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 940% faster on the RX 7800 XT 16GB. The RX 7800 XT 16GB fits more of the catalog at Q4/8K — 23 vs 11 of 67 models (16 vs 8 GB VRAM). Largest model that fits the RX 7800 XT 16GB but not the MacBook Neo A18 Pro 8GB: gemma-4-26B-A4B-it (25.2B). MSRP is $0 for the MacBook Neo A18 Pro 8GB vs $499 for the RX 7800 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 (36 shared models), the RX 7800 XT 16GB posts the higher tok/s in 36 rows vs 0. Methodology.