Can I Run Phi 3.5 Family on Mac mini (M4, 16 GB)?

Superseded model. Phi 3.5 Family has been superseded by Phi-4 Family. This page is kept for reference; the newer family is a better starting point. View Phi-4 Family →

Written by Jakub Rusinowski · Last updated August 20, 2024

Yes — comfortably

Yes, comfortably — Phi 3.5 Mini at Q8_0 needs about 5.6 GB of the 12 GB usable on Mac mini (M4, 16 GB), leaving ~6.4 GB spare and running at ~14.2 tok/s (estimated), with room for about 65,536 tokens of context.

Confidence: high · Recommended quantization: Q8_0 · Estimated speed: ~14.2 tok/s

Mac mini (M4, 16 GB) — what it gives a model

Usable memory for models	12 GB
Memory bandwidth	120 GB/s
Form factor	Mini PC
Operating system	macOS
Memory upgradeable	No — soldered
Price	$599 (lib/data/ai-stations.ts (street price), checked 2026-07-06)

Phi 3.5 Family on Mac mini (M4, 16 GB): memory by quantization

Quant	Memory needed	Fits 12 GB?	Max context	Est. speed	Download
F16	9.2 GB	✓ Yes	32K	~8 tok/s	7.6 GB
Q8_0	5.6 GB	✓ Yes	64K	~14.2 tok/s	4 GB
Q6_K	4.7 GB	✓ Yes	64K	~17.7 tok/s	3.1 GB
Q5_K_M	4.3 GB	✓ Yes	64K	~20 tok/s	2.7 GB
Q4_K_M	3.9 GB	✓ Yes	64K	~22.7 tok/s	2.3 GB
Q3_K_M	3.2 GB	✓ Yes	64K	~29.6 tok/s	1.6 GB
Q2_K	2.9 GB	✓ Yes	64K	~35.6 tok/s	1.2 GB

What to watch out for

Memory on this machine is not upgradeable, so the configuration you buy is the ceiling for every model you will ever run on it.

Mac mini M4 16 GB limitations

The cheapest credible always-on local-AI box, but 16 GB caps it at small and mid-size models.
Memory is soldered; upgrading means replacing the machine.

Recommended setup

Ollama or LM Studio (Metal) — MLX for the fastest Apple-native throughput

How these numbers are calculated

Memory need = quantized weights + KV cache at 8,192 tokens (f16) + 0.8 GB runtime overhead.
16 GB unified memory at 120 GB/s, shared between CPU and GPU.
macOS reserves a share of unified memory for the system, so not all of it is available to a model.
Throughput is a memory-bandwidth roofline estimate, not a measurement. It is labelled "estimated" everywhere it appears.
KV cache is computed from this model's published attention configuration.

FAQ