Qwen3.6 27B Fable-Fus-711-UnHeretic-NM-DAU-NEO-MAX-NEO-LOW
on AMD RX 7900 XTX · llama.cpp · 16,384 ctx
Use cases
coding
Summary
User reports Qwen3.6-27B at 41.70 t/s decode and 1075.8 t/s prompt processing on an RX 7900 XTX.
Setup is llama.cpp (ROCm/HIP backend, LTO and WMMA flash attention on) with IQ4_XS weights and F16 KV cache at 16K context, batch 1024 and ubatch 256.
The model is a 14.1 GiB MTP build; the user calls this the best overall configuration and notes LTO gives a 5-15% improvement.