Compatibility Check
Can I Run Phi-3 Medium 14B on Apple M4 Ultra?
Yes — Apple M4 Ultra runs Phi-3 Medium 14B fully on GPU at the Q8_0 quantization.
Estimated ~70.3 tokens/sec on the Q8_0 quantization.
Full GPU
Best variant: Q8_0
Full GPU inference — 256 GB VRAM meets the 20 GB recommendation.
- GPU VRAM
- 256 GB
- Min VRAM (best fit)
- 16 GB
- Recommended VRAM
- 20 GB
- Estimated tok/s
- ~70.3
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Every Phi-3 Medium 14B 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 | 8.2 GB | 9.5 GB | 12 GB | 4K / 4K | Full GPU | ~106.5 |
| Q8_0Best fit | 14.8 GB | 16 GB | 20 GB | 4K / 4K | Full GPU | ~70.3 |
Apple M4 Ultra is solid pick for Phi-3 Medium 14B
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