Can I Run / MiMo V2 Omni / on Apple M5 Ultra (512GB)

Can I Run MiMo V2 Omni on a Apple M5 Ultra (512GB)?

Yes

Runs at full precision (fp16). Zero quality loss.

Model size
120B
GPU memory
512GB
Smallest quant
Q4_K_M
Best fit
fp16

5 quantizations fit your 512GB

QuantMin VRAMRecommendedFile sizeHeadroom
fp16BEST241.0 GB242.5 GB240.0 GB+271.0 GB
Q8_0128.5 GB130.0 GB127.5 GB+383.5 GB
Q6_K99.8 GB101.3 GB98.8 GB+412.1 GB
Q5_K_M86.2 GB87.7 GB85.2 GB+425.8 GB
Q4_K_M73.8 GB75.3 GB72.8 GB+438.3 GB

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Full model details
MiMo V2 Omni

All quant variants, benchmark scores, and use-case tags.

Best models for this GPU
Apple M5 Ultra (512GB)

Top-ranked open-source models that fit in 512GB.

FAQ

Can the Apple M5 Ultra (512GB) run MiMo V2 Omni?

Yes. The Apple M5 Ultra (512GB)'s 512GB of unified memory is enough to run MiMo V2 Omni at fp16 quantization (241.0GB required).

What's the best quantization to use?

fp16 is the highest-precision quantization that fits in your 512GB. It uses about 241.0GB of memory and 242.5GB recommended for comfortable inference.

What if I need more headroom for context length?

KV cache memory grows with context length. The numbers above assume a baseline 2K-4K context. For long-context use (32K+), add another 2-6GB depending on the model architecture.