The RX 7700 XT 12GB has about 50% more memory bandwidth (432 vs 288 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 50% faster on the RX 7700 XT 12GB. The RX 7600 XT 16GB fits more of the catalog at Q4/8K — 25 vs 18 of 61 models (16 vs 12 GB VRAM). Largest model that fits the RX 7600 XT 16GB but not the RX 7700 XT 12GB: gpt-oss-20b (21.5B). MSRP is $329 for the RX 7600 XT 16GB vs $449 for the RX 7700 XT 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 (40 shared models), the RX 7700 XT 12GB posts the higher tok/s in 25 rows vs 15. Methodology.