Won't fit
Running Llama 3.3 70B Instruct on Apple M3 Ultra
Apple M3 Ultra has no usable VRAM or unified memory data — cannot evaluate fit.
Model size
70B params
Llama 3.3 70B Instruct →Memory available
0 GB
Apple M3 Ultra →Recommended quant
—
Highest quality that fits
Variants and what fits
| Quantization | File size | VRAM required | Fits on Apple M3 Ultra? |
|---|---|---|---|
| Q4_K_M | 40.0 GB | 48 GB | No |
| Q5_K_M | 47.0 GB | 56 GB | No |
| Q8_0 | 70.0 GB | 80 GB | No |
Real benchmarks
| Tool | Quant | Context | tok/s | VRAM used | Source |
|---|---|---|---|---|---|
| MLX-LM | Q4_K_M | 4,096 | 12.0 tok/s | — | community |
Frequently asked
Can Apple M3 Ultra run Llama 3.3 70B Instruct?
Apple M3 Ultra has no usable VRAM or unified memory data — cannot evaluate fit.
What quantization should I use?
No quantization of Llama 3.3 70B Instruct fits on Apple M3 Ultra. Pick a smaller model.
How fast will it be?
Measured at 12.0 tok/s on this combination (community-sourced).
See also: Llama 3.3 70B Instruct, Apple M3 Ultra, all benchmarks.
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