llamaperf

Qwen3.8 125B (6B active) Flash-Next

on AMD Strix Halo 128GB · llama.cpp

Tone: mixedAMD hardware
Oct 12, 2026
Throughput
27.2 t/s gen
Quant
UD-IQ4_XS (GGUF)
System RAM
128 GB

Use cases

agenticcodinglong-contexttool-use

Summary

User reports Qwen3.8-Flash-Next at 27.16 t/s on Strix Halo 128GB, from a ranked table of 33 models measured on the same hardware. Setup is llama.cpp Vulkan/RADV with UD-IQ4_XS weights; the same model runs 50.69 t/s on the user's Halogen engine with 79.1% draft acceptance. The table's other rows range from 266.00 t/s (Qwen3 0.6B) to 4.90 t/s (Llama 3.1 70B); the user notes dense models above 14B are below usable speed and that the intelligence column is unsourced opinion, not measured data.