Can I Run IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB)?

Written by Jakub Rusinowski · Last updated April 29, 2026

Yes — comfortably

Yes, comfortably — Granite 4.1 30B at Q8_0 needs about 34.5 GB of the 96 GB usable on MacBook Pro 16" (M5 Max, 128 GB), leaving ~61.5 GB spare and running at ~10 tok/s (estimated), with room for about 131,072 tokens of context.

Confidence: medium · Recommended quantization: Q8_0 · Estimated speed: ~10 tok/s

MacBook Pro 16" (M5 Max, 128 GB) — what it gives a model

Usable memory for models	96 GB
Memory bandwidth	614 GB/s
Form factor	Laptop
Operating system	macOS
Memory upgradeable	No — soldered

IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB): memory by quantization

Quant	Memory needed	Fits 96 GB?	Max context	Est. speed	Download
F16	62.6 GB	✓ Yes	128K	~5.4 tok/s	60 GB
Q8_0	34.5 GB	✓ Yes	128K	~10 tok/s	31.9 GB
Q6_K	27.2 GB	✓ Yes	128K	~12.7 tok/s	24.6 GB
Q5_K_M	23.8 GB	✓ Yes	128K	~14.5 tok/s	21.3 GB
Q4_K_M	20.7 GB	✓ Yes	128K	~16.8 tok/s	18.1 GB
Q3_K_M	15.4 GB	✓ Yes	128K	~22.9 tok/s	12.8 GB
Q2_K	12.4 GB	✓ Yes	128K	~28.6 tok/s	9.9 GB

Which IBM Granite 4.1 sizes fit

Variant	Needs at Q4_K_M	Fits?	Est. speed
Granite 4.1 30B	20.7 GB	✓ Fits	~16.8 tok/s
Granite 4.1 8B	6.8 GB	✓ Fits	~52.5 tok/s
Granite 4.1 3B	3.5 GB	✓ Fits	~103.9 tok/s

What to watch out for

This model does not publish its full attention configuration, so the KV-cache share of these figures is inferred from its parameter count rather than computed exactly.
Memory on this machine is not upgradeable, so the configuration you buy is the ceiling for every model you will ever run on it.

MacBook Pro M5 Max 128 GB limitations

Unified memory is soldered and cannot be upgraded after purchase.

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.
128 GB unified memory at 614 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 inferred from the parameter count because this model does not publish its full attention configuration.

FAQ

Can I run IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB)?

Which quantization of IBM Granite 4.1 should I use on MacBook Pro 16" (M5 Max, 128 GB)?

Q8_0 — it needs about 34.5 GB of the 96 GB available, downloads as roughly 31.9 GB, and runs at an estimated 10 tokens/sec with up to 128K of context.

What limits IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB)?

Nothing binding — the model fits with headroom and generates at a usable speed on this hardware.

Can I Run IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB)?

MacBook Pro 16" (M5 Max, 128 GB) — what it gives a model

IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB): memory by quantization

Which IBM Granite 4.1 sizes fit

What to watch out for

MacBook Pro M5 Max 128 GB limitations

Recommended setup

How these numbers are calculated

FAQ

Can I run IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB)?

Which quantization of IBM Granite 4.1 should I use on MacBook Pro 16" (M5 Max, 128 GB)?

What limits IBM Granite 4.1 on MacBook Pro 16" (M5 Max, 128 GB)?

Which runtime should I use?

Other Computers

Other Models on MacBook Pro 16" (M5 Max, 128 GB)

IBM Granite 4.1 on GPUs

What This Model Is Good At

Model & Tools