Compatibility Check
Can I Run Llama 3.1 Nemotron Ultra 253B on Apple M4 Ultra?
Yes — Apple M4 Ultra runs Llama 3.1 Nemotron Ultra 253B fully on GPU at the Q5_K_M quantization.
Estimated ~6 tokens/sec on the Q5_K_M quantization.
Full GPU
Best variant: Q5_K_M
Full GPU inference — 256 GB VRAM meets the 205.5 GB recommendation.
- GPU VRAM
- 256 GB
- Min VRAM (best fit)
- 181.8 GB
- Recommended VRAM
- 205.5 GB
- Estimated tok/s
- ~6
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Every Llama 3.1 Nemotron Ultra 253B quantization on Apple M4 Ultra
Each row runs the compatibility engine against your VRAM, RAM, and the model's requirements.
| Quantization | File Size | Min VRAM | Rec VRAM | Context | Verdict | Estimated tok/s |
|---|---|---|---|---|---|---|
| Q4_K_M | 126.5 GB | 145.5 GB | 164.5 GB | 8K / 8K | Full GPU | ~6.9 |
| Q5_K_MBest fit | 158.1 GB | 181.8 GB | 205.5 GB | 8K / 8K | Full GPU | ~6 |
| Q8_0 | 253 GB | 291 GB | 328.9 GB | 8K / 8K | Can't Run | — |
| FP16 | 506 GB | 581.9 GB | 657.8 GB | 8K / 8K | Can't Run | — |
Apple M4 Ultra is solid pick for Llama 3.1 Nemotron Ultra 253B
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