Summary
User reports Qwen3.8-Next-Flash at ~240 t/s decode on a single RTX Pro 6000 Max-Q at 300W.
Setup is a patched sglang with the RadixArk/Qwen3.8-Flash-Next-NVFP4 checkpoint, using FP8 quantization of the lm head and layers, kernel tuning, and MTP config tuning.
The user notes a theoretical bandwidth limit of ~280 t/s.