Can I Run SmolLM2 on Mac Studio (M3 Ultra, 256 GB)?

Written by Jakub Rusinowski · Last updated November 20, 2024

Yes — comfortably

Yes, comfortably — SmolLM2 1.7B Instruct at Q8_0 needs about 4.2 GB of the 192 GB usable on Mac Studio (M3 Ultra, 256 GB), leaving ~187.8 GB spare and running at ~113.1 tok/s (estimated), with room for about 8,192 tokens of context.

Confidence: high · Recommended quantization: Q8_0 · Estimated speed: ~113.1 tok/s

Mac Studio (M3 Ultra, 256 GB) — what it gives a model

Usable memory for models192 GB
Memory bandwidth819 GB/s
Form factorDesktop
Operating systemmacOS
Memory upgradeableNo — soldered

SmolLM2 on Mac Studio (M3 Ultra, 256 GB): memory by quantization

QuantMemory neededFits 192 GB?Max contextEst. speedDownload
F165.8 GB✓ Yes8K~80.6 tok/s3.4 GB
Q8_04.2 GB✓ Yes8K~113.1 tok/s1.8 GB
Q6_K3.8 GB✓ Yes8K~126.3 tok/s1.4 GB
Q5_K_M3.6 GB✓ Yes8K~133.4 tok/s1.2 GB
Q4_K_M3.4 GB✓ Yes8K~141 tok/s1 GB
Q3_K_M3.1 GB✓ Yes8K~155.8 tok/s0.7 GB
Q2_K3 GB✓ Yes8K~165.4 tok/s0.6 GB

Which SmolLM2 sizes fit

VariantNeeds at Q4_K_MFits?Est. speed
SmolLM2 1.7B Instruct3.4 GB✓ Fits~141 tok/s
SmolLM2 360M Instruct1.4 GB✓ Fits~259 tok/s

What to watch out for

Mac Studio M3 Ultra 256 GB limitations

Recommended setup

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

How these numbers are calculated

FAQ

Can I run SmolLM2 on Mac Studio (M3 Ultra, 256 GB)?

Yes, comfortably — SmolLM2 1.7B Instruct at Q8_0 needs about 4.2 GB of the 192 GB usable on Mac Studio (M3 Ultra, 256 GB), leaving ~187.8 GB spare and running at ~113.1 tok/s (estimated), with room for about 8,192 tokens of context.

Which quantization of SmolLM2 should I use on Mac Studio (M3 Ultra, 256 GB)?

Q8_0 — it needs about 4.2 GB of the 192 GB available, downloads as roughly 1.8 GB, and runs at an estimated 113.1 tokens/sec with up to 8K of context.

What limits SmolLM2 on Mac Studio (M3 Ultra, 256 GB)?

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

Which runtime should I use?

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

Other Computers

Other Models on Mac Studio (M3 Ultra, 256 GB)

SmolLM2 on GPUs

What This Model Is Good At

Model & Tools

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