Can I Run / Mistral Medium 3.5 128B / on Apple M5 Max (128GB)

Can I Run Mistral Medium 3.5 128B on a Apple M5 Max (128GB)?

Yes

Runs comfortably at Q6_K — minimal quality loss.

Model size
128B
GPU memory
128GB
Smallest quant
Q2_K
Best fit
Q6_K

4 quantizations fit your 128GB

QuantMin VRAMRecommendedFile sizeHeadroom
Q6_KBEST106.2 GB107.7 GB102.6 GB+21.8 GB
Q5_K_M91.7 GB93.2 GB88.3 GB+36.3 GB
Q4_K_M78.4 GB79.9 GB74.9 GB+49.6 GB
Q2_K43.0 GB44.5 GB46.6 GB+85.0 GB

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Full model details
Mistral Medium 3.5 128B

All quant variants, benchmark scores, and use-case tags.

Best models for this GPU
Apple M5 Max (128GB)

Top-ranked open-source models that fit in 128GB.

FAQ

Can the Apple M5 Max (128GB) run Mistral Medium 3.5 128B?

Yes. The Apple M5 Max (128GB)'s 128GB of unified memory is enough to run Mistral Medium 3.5 128B at Q6_K quantization (106.2GB required).

What's the best quantization to use?

Q6_K is the highest-precision quantization that fits in your 128GB. It uses about 106.2GB of memory and 107.7GB recommended for comfortable inference.

What if I need more headroom for context length?

KV cache memory grows with context length. The numbers above assume a baseline 2K-4K context. For long-context use (32K+), add another 2-6GB depending on the model architecture.