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vLLM W4A16 vs llama Q4_K_M dense: prefill 7.6-32x behind (llama plateaus ~765, vLLM scales to 24.4k); decode ~parity at B=1 (weight-bandwidth-bound), 2.2x at B=64. Full NVFP4 (W4A4) hangs on this vLLM/GB10 stack - W4A16 used. Decision: the Lever-3 kernel track must ALSO deliver a non-grouped FP4 dense GEMM, not just the MoE grouped GEMM (dense GEMM is the simpler first kernel to land). Assisted-by: Claude:opus-4.8 [Claude Code] Signed-off-by: Ettore Di Giacinto <mudler@localai.io>