Mac Studio M2 Ultra (64GB)
Apple · High-end
A previous-generation Apple Silicon desktop, now behind the M3 Ultra and M4 Max Studios, but still capable and good value used. Its unified memory is shared between CPU and GPU, so most of the 64GB is available to models, enough to run large models that would otherwise need multiple discrete GPUs, at low power.
Specifications
| Unified memory | 64GB |
|---|---|
| Memory bandwidth | 800 GB/s |
| Power draw | 295W |
| Type | complete machine |
A complete machine rather than a card, so compare it against a full build rather than a GPU alone. Higher-memory configurations cost considerably more.
Mac Studio M2 Ultra (64GB): common questions
- What models can the Mac Studio M2 Ultra (64GB) run?
- With 64GB of unified memory it can run models up to roughly 103B parameters at a 4-bit quantisation, or smaller models with more context. Use the hardware matrix for specifics; these figures are approximate.
- How much power does the Mac Studio M2 Ultra (64GB) draw?
- About 295W under load, so pair it with a power supply that has real headroom.
Strengths
- Large unified memory runs models that need far more than a 24GB card
- Very low power draw for the capability, and near-silent
- Excellent MLX and llama.cpp Metal support on Apple Silicon
Weaknesses
- Memory bandwidth trails high-end discrete GPUs, so generation is slower
- Memory is fixed at purchase, you cannot add more later
- Prompt processing on long contexts is noticeably slower than on NVIDIA cards
Featured in builds
Entry last verified 30 July 2026. Specifications and especially prices change; verify before buying.