Can the Apple M4 Pro (48GB) run Phi-3.5 Mini 3.8B?
- FP16
- Q8_0
- Q6_K
- Q5_K_M
- Q4_K_M
- Q3_K_M
- Q2_K
Yes. The Apple M4 Pro (48GB) can run Phi-3.5 Mini 3.8B fully in unified memory at FP16 (full quality), using about 11.5 GB of the 36 GB available, at roughly 21 tokens/second.
Run it with Ollama
With Ollama installed, one command downloads and starts Phi-3.5 Mini 3.8B:
ollama run phi3.5:3.8bOllama's default download is Q4_K_M (about 6.1 GB here). You have room for FP16, which is full quality: pick that GGUF in LM Studio or from Hugging Face.
Run it in the cloud
No Apple M4 Pro (48GB)? Run Phi-3.5 Mini 3.8B in the cloud.
Rent a cloud GPU by the hour. No upfront cost, stop any time.
Memory needed by quantization
At 8,192 tokens of context. The black line marks the 36 GB the Apple M4 Pro (48GB) can use. macOS lets the GPU use about 36 GB of the 48 GB unified memory by default.
| Quant | Quality | Memory | Fits? | Speed | |
|---|---|---|---|---|---|
| FP16 | Full quality | 11.5 GB | Fits | ~21 tok/s | |
| Q8_0 | Near-lossless | 7.9 GB | Fits | ~40 tok/s | |
| Q6_K | Excellent | 7 GB | Fits | ~52 tok/s | |
| Q5_K_M | Very good | 6.5 GB | Fits | ~60 tok/s | |
| Q4_K_M | Good, most popular | 6.1 GB | Fits | ~71 tok/s | |
| Q3_K_M | Noticeably degraded | 5.7 GB | Fits | ~88 tok/s | |
| Q2_K | Heavily degraded | 5.3 GB | Fits | ~114 tok/s |
GPUs that run Phi-3.5 Mini 3.8B comfortably
Models that run well on the Apple M4 Pro (48GB)
Frequently asked questions
Can Apple M4 Pro (48GB) run Phi-3.5 Mini 3.8B?
Yes. The Apple M4 Pro (48GB) can run Phi-3.5 Mini 3.8B fully in unified memory at FP16 (full quality), using about 11.5 GB of the 36 GB available, at roughly 21 tokens/second.
How much VRAM does Phi-3.5 Mini 3.8B need?
About 6.1 GB at Q4_K_M with 8,192 tokens of context, and about 11.5 GB at full FP16 precision.
How fast is Phi-3.5 Mini 3.8B on the Apple M4 Pro (48GB)?
Roughly 21 tokens per second at FP16, estimated from the Apple M4 Pro (48GB)'s 273 GB/s memory bandwidth.