Can I Run MiniMax M3 on 256 GB system RAM?

Written by Jakub Rusinowski · Last updated June 26, 2026

256 GB system RAM — what it gives a model

Usable memory for models	204.8 GB
Memory bandwidth	90 GB/s

MiniMax M3 on 256 GB system RAM: memory by quantization

Quant	Memory needed	Fits 204.8 GB?	Max context	Est. speed	Download
F16	464.3 GB	✗ No	—	—	460 GB
Q8_0	248.7 GB	✗ No	—	—	244.4 GB
Q6_K	192.9 GB	✓ Yes	32K	~6.6 tok/s	188.6 GB
Q5_K_M	167.3 GB	✓ Yes	64K	~7.5 tok/s	163 GB
Q4_K_M	143.2 GB	✓ Yes	128K	~8.5 tok/s	138.9 GB
Q3_K_M	102.4 GB	✓ Yes	128K	~10.9 tok/s	98 GB
Q2_K	79.9 GB	✓ Yes	256K	~12.9 tok/s	75.6 GB

Which MiniMax M3 sizes fit

Variant	Needs at Q4_K_M	Fits?	Est. speed
MiniMax M3 230B-A10B	143.2 GB	✓ Fits	~8.5 tok/s
MiniMax M3-VL	143.2 GB	✓ Fits	~8.5 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.
• These figures assume CPU-only inference. Any discrete GPU, even an 8 GB one, will be several times faster for models that fit in its VRAM.

Recommended setup

llama.cpp (CPU build) or Ollama — both run without a GPU

How these numbers are calculated

• Memory need = quantized weights + KV cache at 8,192 tokens (f16) + 0.8 GB runtime overhead.
• 204.8 GB of the 256 GB is treated as usable for model weights (80% — the rest is the OS and running applications).
• DDR5-5600 dual channel at 89.6 GB/s peak. CPU decode is assumed to sustain 35% of that peak, because CPU inference is not purely bandwidth-bound — it also spends real time in compute and thread synchronisation. This figure is an assumption, not a fitted constant: no CPU measurement is in the calibration set.
• CPU-only inference: no GPU is assumed. A GPU of any size will beat these figures substantially.
• 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 MiniMax M3 on 256 GB system RAM?

Yes, but it is tight — MiniMax M3 230B-A10B at Q6_K needs about 192.9 GB of the 204.8 GB usable on 256 GB system RAM, leaving only ~11.9 GB before the runtime starts swapping. Expect ~6.6 tok/s (estimated), with room for about 32,768 tokens of context.

Which quantization of MiniMax M3 should I use on 256 GB system RAM?

Q6_K — it needs about 192.9 GB of the 204.8 GB available, downloads as roughly 188.6 GB, and runs at an estimated 6.6 tokens/sec with up to 32K of context.

What limits MiniMax M3 on 256 GB system RAM?

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

Which runtime should I use?

llama.cpp (CPU build) or Ollama — both run without a GPU

Other RAM Capacities

• MiniMax M3 on 192 GB RAM
• MiniMax M3 on 128 GB RAM

Other Models on 256 GB system RAM

• Ministral on 256 GB system RAM
• Mistral Family on 256 GB system RAM
• Mistral Small 3.1 on 256 GB system RAM
• Mistral Small 4 on 256 GB system RAM
• Nemotron 3 Super on 256 GB system RAM

MiniMax M3 on GPUs

• MiniMax M3 on Apple M4 Max
• MiniMax M3 on Apple M3 Max
• MiniMax M3 on Apple M2 Ultra
• MiniMax M3 on Apple M2 Max

What This Model Is Good At

• Best local LLMs for coding
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Model & Tools

• MiniMax M3 model page
• VRAM calculator
• Check your own hardware

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