llamaperf

Qwen3.6 27B

on AMD Strix Halo 128GB · llama.cpp / Vulkan RADV / build unknown

AMD hardware
Oct 13, 2026
Throughput
12.0 t/s gen · 322.0 tokens/s prompt processing (prefill)Prompt processing measures input prefill speed; it does not tell you the time to first token.
Quant
UD-Q4_K_XL (GGUF)
Flash Attention
on
System RAM
128 GB

Summary

User reports Qwen3.6-27B at 12 t/s generation and 322 t/s prompt processing on a single Radeon 8060S iGPU in an AMD Strix Halo system with 128 GB unified memory. Setup is llama-bench with the Unsloth UD-Q4_K_XL quant, full offload, batch 2048 and flash attention; the 120 GB GPU-memory cap is a software limit, not observed usage. The 12 t/s and 322 t/s are separate 128-token generation and 512-token prompt microbenchmarks, not one end-to-end request; the narrative cites 12.03 t/s while the table rounds to 12.0.