M3 Ultra 512GB vs M4 Max 128GB
For running local LLMs · 10 reports across 6 models
Highest reported generation speed by model family
These maxima come from different community setups. Model size, quantization, GPU count, offloading and concurrency may differ. They do not establish which GPU is faster for the same workload. Check the comparison conditions →
| Model | M3 Ultra 512GB | M4 Max 128GB |
|---|---|---|
| DeepSeek V4 Flashup to 285B | 20.0n=3 | — |
| DeepSeek V4.1 Flashup to 552B | 31.3n=2 | — |
| Qwen3.8up to 2400B | — | 15.2n=2 |
| GLM-5.3up to 321B | — | —n=1 |
| Museup to 30B | — | 25.0n=1 |
| Qwen3.6up to 35B | — | 72.5n=1 |