Qwen3.8 125B (6B active) Flash-Next
on AMD Strix Halo 128GB · Halowin Bubo · 262,144 ctx
Summary
User reports Qwen3.8 Flash-Next at 1,556 tok/s prefill on a Geekom A9 Mega (Ryzen AI Max+ 395, 128 GB LPDDR5X), with decode swinging 54-79 tok/s as draft acceptance varies between 53% and 80%.
Setup is Halowin Bubo, a Gufo fork for Windows 11 and Strix Halo, running the UD-Q4_K_XL GGUF at 108.6 GiB across 8 files, with 96 GB carved out to the GPU in BIOS and a fixed 128 GB page file. Context window is 262K.
User says it does not slow down over long context; a 20.3M-token session at a 98% cache hit never pushed the live window past 73%. Load takes 24-26 s. The engine is three weeks old, Windows-only by design, and the user is not affiliated with its authors.