Can I Run / NVIDIA Nemotron 3 Super / on Apple M5 Ultra (512GB)

Can I Run NVIDIA Nemotron 3 Super on a Apple M5 Ultra (512GB)?

Yes

Runs at Q8_0 — near-lossless quality.

Model size
340B
GPU memory
512GB
Smallest quant
Q4_K_M
Best fit
Q8_0

4 quantizations fit your 512GB

QuantMin VRAMRecommendedFile sizeHeadroom
Q8_0BEST362.3 GB363.8 GB361.3 GB+149.8 GB
Q6_K281.1 GB282.6 GB280.1 GB+230.9 GB
Q5_K_M242.4 GB243.9 GB241.4 GB+269.6 GB
Q4_K_M207.1 GB208.6 GB206.1 GB+304.9 GB

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Full model details
NVIDIA Nemotron 3 Super

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 NVIDIA Nemotron 3 Super?

Yes. The Apple M5 Ultra (512GB)'s 512GB of unified memory is enough to run NVIDIA Nemotron 3 Super at Q8_0 quantization (362.3GB required).

What's the best quantization to use?

Q8_0 is the highest-precision quantization that fits in your 512GB. It uses about 362.3GB of memory and 363.8GB 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.