Gemma 4 31B

User reports Gemma 4 31B at 12.1 t/s generation and 573.6 t/s prefill on an AMD Strix Halo 128GB-class unified-memory system. Setup is the Gufo Gemma development fork with QAT UD-Q4_K_XL (Q4_0) weights, one warmed HTTP single-session prose request, greedy temperature 0/seed 1, thinking off, autoregressive with draft_n=0. The row is one sample with no SD, prompt_n 2038, cache_n 0, predicted_n 128; rates are engine-stage, not whole-request throughput, and were not independently recomputed.