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URL: https://willitrunai.com/can-run/phi-3-mini-3.8b-on-m4-max-64gb

⇱ Phi 3 Mini 3.8B on MacBook Pro M4 Max 64GB? YES

Can Phi 3 Mini 3.8B run on MacBook Pro M4 Max 64GB?

YES — Runs Great

B65Good
○Estimated from fit model

Phi 3 Mini 3.8B needs ~16.0 GB VRAM. MacBook Pro M4 Max 64GB has 46.1 GB. With Q4_K_M quantization, expect ~53 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: MediumStack: StandardBottleneck: Balanced
Share:

Operating mode

Choose the run profile you care about

Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.

Current mode

Balanced

Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 16.0 GB, 53.2 tok/s, Runs well
16.0 GB required46.1 GB available
35% VRAM used

Fit status

Runs well

Decode

53.2 tok/s

TTFT

3639 ms

Safe context

98K

Memory

16.0 GB / 46.1 GB

Memory breakdown

Weights2.3 GB
KV Cache5.9 GB
Runtime0.9 GB
Headroom6.9 GB

See how fast it feels

See how fast it feelsPhi 3 Mini 3.8B on MacBook Pro M4 Max 64GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API. When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed. Key benefits of running locally: - Full privacy: your prompts never leave your machine - No per-token cost or rate limits - Works offline once the model is downloaded - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb: Model size Q4 (4-bit) Q8 (8-bit) FP16 7B params ~4.3 GB ~7.5 GB ~14 GB 13B params ~7.9 GB ~13.9 GB ~26 GB 70B params ~42.7 GB ~74.9 GB ~140 GB Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 53.2 tok/s decode · 3.6s TTFT (warm) · 133 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

Shared-memory contention still exists

The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.

Best improvement path

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatBRuns well53.2 tok/s1985 ms98K
CodingBRuns well53.2 tok/s3639 ms98K
Agentic CodingBRuns well53.2 tok/s5293 ms98K
ReasoningBRuns well53.2 tok/s4301 ms98K
RAGBRuns well53.2 tok/s6617 ms98K

Quantization options

How Phi 3 Mini 3.8B (3.799999952316284B params) fits at each quantization level on MacBook Pro M4 Max 64GB (46.1 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
1.5 GB
LowB58
Q3_K_S
3
1.9 GB
LowB58
NVFP4
4
2.1 GB
MediumB58
Q4_K_M
4
2.3 GB
MediumB58
Q5_K_M
5
2.7 GB
HighB59
Q6_K
6
3.1 GB
HighB59
Q8_0
8
4.1 GB
Very HighB59
F16Best for your GPU
16
7.8 GB
MaximumB60

Get started

Copy-paste commands to run Phi 3 Mini 3.8B on your machine.

Run

ollama run phi3:mini

Frequently asked questions

See all results for MacBook Pro M4 Max 64GBSee all hardware for Phi 3 Mini 3.8B