Can I Run Nemotron 3 Ultra on a Apple M3 Ultra (512GB)?
Runs comfortably at Q6_K — minimal quality loss.
3 quantizations fit your 512GB
| Quant | Min VRAM | Recommended | File size | Headroom |
|---|---|---|---|---|
| Q6_KBEST | 454.1 GB | 455.6 GB | 453.1 GB | +57.9 GB |
| Q5_K_M | 391.5 GB | 393.0 GB | 390.5 GB | +120.5 GB |
| Q4_K_M | 334.4 GB | 335.9 GB | 333.4 GB | +177.6 GB |
Try it in the cloud first
Don't want to download Nemotron 3 Ultra just to try it? Use a hosted API or rent a GPU by the second.
Affiliate links — we earn a commission at no cost to you.
All quant variants, benchmark scores, and use-case tags.
Top-ranked open-source models that fit in 512GB.
FAQ
Can the Apple M3 Ultra (512GB) run Nemotron 3 Ultra?
Yes. The Apple M3 Ultra (512GB)'s 512GB of unified memory is enough to run Nemotron 3 Ultra at Q6_K quantization (454.1GB required).
What's the best quantization to use?
Q6_K is the highest-precision quantization that fits in your 512GB. It uses about 454.1GB of memory and 455.6GB 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.