Qwen3.8
on 2× AMD RX 7900 XTX · llama.cpp-RDNA3-7900xtx-opt · 60,000 ctx
Summary
User reports Qwen3.8 Q8 at 82 t/s decode on dual RX 7900 XTX cards at 60k context.
Setup uses a fork of llama.cpp optimized for RDNA3 7900 XTX, replacing vanilla llama.cpp with Vulkan, which gave about 28 t/s.
The user notes the work is not theirs and shares the repo so others can push it further.