llamaperf

Qwen3.8 27B

on NVIDIA RTX 3090 · vLLM · 195,000 ctx

Tone: positiveNVIDIA hardware
Sep 7, 2026
Throughput
82.0 t/s gen
Quant
W4A16
KV cache
FP8
VRAM reported
24 GB

Summary

User reports Qwen3.8 27B at 82 t/s single request on an RTX 3090, with up to 672 t/s peak and 417 t/s sustained at 64 concurrent. Setup is vLLM with W4A16 quantization, an FP8 KV cache, and int8 lm_head and embed_tokens, at up to 195k context. The title says Qwen3.8-27b while the body mentions Qwen3.6-28B.