Compatibility Check
Can I Run Phi-4 Reasoning 14B on Apple M4 Ultra?
Yes — Apple M4 Ultra runs Phi-4 Reasoning 14B fully on GPU at the FP16 quantization.
Estimated ~39 tokens/sec on the FP16 quantization.
Full GPU
Best variant: FP16
Full GPU inference — 256 GB VRAM meets the 36.4 GB recommendation.
- GPU VRAM
- 256 GB
- Min VRAM (best fit)
- 32.2 GB
- Recommended VRAM
- 36.4 GB
- Estimated tok/s
- ~39
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Every Phi-4 Reasoning 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 | 7 GB | 8 GB | 9.1 GB | 8K / 8K | Full GPU | ~124.8 |
| Q5_K_M | 8.8 GB | 10.1 GB | 11.4 GB | 8K / 8K | Full GPU | ~107.9 |
| Q8_0 | 14 GB | 16.1 GB | 18.2 GB | 8K / 8K | Full GPU | ~74.3 |
| FP16Best fit | 28 GB | 32.2 GB | 36.4 GB | 8K / 8K | Full GPU | ~39 |
Apple M4 Ultra is solid pick for Phi-4 Reasoning 14B
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