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text model · mistral · macOS

Can I run Mixtral 8x7B on Apple M5 Pro (48GB)?

Compatibility verdict VRAM threshold engine
Yes, but tightGPU accelerated

Yes. Mixtral 8x7B runs on Apple M5 Pro (48GB) at Q4_K_M (~28.9 GB of ~32 GB usable).

Needs ~28.9 GB Device usable ~32 GB

Fits at Q4_K_M (~28.9 GB of ~32 GB usable) but with little headroom, close other apps.

Q4_K_M needed
~28.9 GB
Usable on device
~32 GB
Device memory
48 GB
Best quant
Q4_K_M

Run it

Install commands macOS

Pick your tool. All three load the same Q4_K_M weights.

Ollama
$ ollama run mixtral:8x7b
llama.cpp
$ llama-cli -hf MaziyarPanahi/Mixtral-8x7B-Instruct-v0.1-GGUF:Q4_K_M
LM Studio
$ lms get MaziyarPanahi/Mixtral-8x7B-Instruct-v0.1-GGUF

vLLM is NOT a Mac tool, it is a CUDA/Linux serving engine. Unified memory is not a fixed VRAM slice; ~70% is usable for weights.

Model mistral
Parameters
46.7B (MoE, 12.9B active)
Q4_K_M size
26.49 GB
Q8_0 size
46.22 GB
Context
32k
Ollama tag
mixtral:8x7b
Full Mixtral 8x7B requirements →
Device macOS
Memory
48 GB unified
Usable for weights
~32 GB
Best runtime
MLX direct / Ollama (MLX backend)
Best models for Apple M5 Pro (48GB) →

You could also run

Run Mixtral 8x7B on other hardware

FAQ

Can Apple M5 Pro (48GB) run Mixtral 8x7B?

Yes. Mixtral 8x7B runs on Apple M5 Pro (48GB) at Q4_K_M (~28.9 GB of ~32 GB usable).

How much memory does Mixtral 8x7B need?

It is a tight fit on Apple M5 Pro (48GB). At Q4_K_M the weights are ~26.49 GB; with KV cache and runtime overhead, budget ~28.9 GB at a 4k context. It is a Mixture-of-Experts model (46.7B total / 12.9B active), so all experts must stay in memory; memory tracks total params, not active params.

What is the best tool to run Mixtral 8x7B on macOS?

LM Studio for a simple setup; mlx-lm for the most speed. vLLM is NOT a Mac tool, it is a CUDA/Linux serving engine. Unified memory is not a fixed VRAM slice; ~70% is usable for weights.

Sources

Memory figures are estimates. See methodology.