Qwen3 32B
on M3 Ultra 512GB · MLX · 1,024 ctx
Sep 26, 2026
Summary
User benchmarks Qwen 32B at 31.2 t/s generation on 1K context using an M3 Ultra 512GB.
Setup is MLX with Q4 quantization and FP16 KV cache, batch size 1, 256 generation tokens, median of 3 trials.
The post reports a systematic sweep of 5 models, 6 quants, and 7 context lengths (276 runs total), showing generation drops to 8.5 t/s at 128K context and prompt processing falls from ~345 t/s at 1K to ~154 t/s at 128K.