llamaperf

Qwen3.8 27B

on NVIDIA RTX 5090 · SGLang

Tone: positiveNVIDIA hardware
Oct 25, 2026
Throughput
208.2 t/s gen
Quant
NVFP4 (NVFP4)
VRAM reported
32 GB

Summary

User reports Qwen3.8 27B at an average 208.2 tok/s on a single RTX 5090 32GB. Setup is SGLang in Docker with the gittensor NVFP4 build and the DSpark speculative drafter, served over an OpenAI-compatible API. Five runs of 256 tokens with thinking on ranged from 148.3 tok/s (cold start) to 232.4 tok/s, averaging 208.2; the user says it sits in the 220s once warm and peaks above 230.