GLM-5.3 320B (18B active) Flash
on 2× M5 Max 128GB · llama.cpp
Sep 11, 2026
Summary
User benchmarks GLM-5.3 321B across a MacBook M5 Max 128GB and an AMD Strix Halo 128GB connected over TB4.
The default tensor split was slower than the Mac alone. A Mac-heavy split improved prompt processing from 188 to 333 t/s and generation from 17 to 24 t/s.
User also reports 12-15 t/s for model sizes of 148-200 GB and plans to add two Asus GX10 next week.