Qwen3.8 27B
M2 Ultra 128GB · oMLX
- generation:
- 23.0 tokens/s
- prompt processing (prefill):
- 304.2 tokens/s
- quant:
- oQ4e (MLX)
User reports Qwen3.8 27B at 23 t/s generation and 304.2 t/s prompt processing on an M2 Ultra 128GB Mac Studio. Setup is oMLX 0.6.3 with oQ4e 4-bit quantization at workload depth 65536, with 16.7GiB of weights and peak memory rising from 25.3 to 36.2GB. The 304.2 PP is the ANE-on arm; the separate GPU-only baseline is 242.2 PP and 23.8 TG, and the source calls the decode change within variance. Depth 65536 is not a verified configured maximum context.