Ranked #1 in mini pcs by usable model memory — the one feature that decides which LLMs a device can run.
| Usable model memory | 384 GB of 512 GB unified |
| Largest model, Q4 quality | 70B |
| Chip | Apple M3 Ultra |
| Memory speed | 819 GB/s |
| Storage | 1TB–16TB SSD |
| Display | — |
| Weight | — |
| Operating system | macOS |
| AI software | Metal (MLX, llama.cpp) |
| Price | Check retailer |
384 GB of usable model memory fits a 70B model at Q4 quality, with room left over for a long conversation. Memory decides local AI — everything else is second.
Specifications: Apple Mac Studio specs via TechPowerUp, Tom's Hardware M3 Ultra launch.
ModelFit. Laptops, desktop GPUs and mini PCs compared by one feature first: the memory your model can actually use — then everything else.
Specifications from manufacturer listings. Prices from retailer listings; check the retailer for the current price.