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text model · phi · macOS

Can I run Phi-4 14B on Apple M1 (8GB)?

Compatibility verdict VRAM threshold engine
No, not enough memory would not load

No. Phi-4 14B needs ~10.8 GB even at Q4_K_M, but Apple M1 (8GB) only has ~5.5 GB usable.

Needs ~10.8 GB Device usable ~5.5 GB

Needs ~10.8 GB even at Q4_K_M, but only ~5.5 GB is usable.

That figure is at a 4k context and moves about ±15% as context length changes.

The gap is about 5.3 GB: Phi-4 14B needs roughly 10.8 GB at Q4_K_M and Apple M1 (8GB) leaves only about 5.5 GB usable for a model. The lightest tracked hardware that runs Phi-4 14B is the Nvidia GeForce RTX 3060 (12GB) at 12 GB. See Phi-4 14B on Nvidia GeForce RTX 3060 (12GB).

Q4_K_M needed
~10.8 GB
Usable on device
~5.5 GB
Device memory
8 GB
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Which quant fits

Quant ladder vs ~5.5 GB usable
Q2_K
~7.6 GB
Q3_K_M
~8.5 GB
Q4_K_M
~10.8 GB
Q5_K_M
~11.7 GB
Q6_K
~13.2 GB
Q8_0
~17.3 GB
FP16
~29.7 GB
The line marks Apple M1 (8GB)'s ~5.5 GB budget; rungs past it are too large.
Model phi
Parameters
14B
Q4_K_M size
9.05 GB
Q8_0 size
15.58 GB
Context
16k
Ollama tag
phi4:14b
Full Phi-4 14B requirements →
Device macOS
Memory
8 GB unified
Usable for weights
~5.5 GB
Power draw
~39 W
Best runtime
Ollama (llama.cpp Metal backend)
Best models for Apple M1 (8GB) →

What you can run instead

Run Phi-4 14B on other hardware

FAQ

Can Apple M1 (8GB) run Phi-4 14B?

No. Phi-4 14B needs ~10.8 GB even at Q4_K_M, but Apple M1 (8GB) only has ~5.5 GB usable.

How much memory does Phi-4 14B need?

Apple M1 (8GB) does not have enough memory. At Q4_K_M the weights are ~9.05 GB; with KV cache and runtime overhead, budget ~10.8 GB at a 4k context.

What is the best tool to run Phi-4 14B 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.

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Phi-4 14B on Apple M1 (8GB) compatibility badge A live badge for your model card or README, updated as the data is.
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Sources

Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.