Compatibility Check
Can I Run Qwen3.5 4B on Apple M4 Ultra?
Yes — Apple M4 Ultra runs Qwen3.5 4B fully on GPU at the FP16 quantization.
Estimated ~136.5 tokens/sec on the FP16 quantization.
Full GPU
Best variant: FP16
Full GPU inference — 256 GB VRAM meets the 10.4 GB recommendation.
- GPU VRAM
- 256 GB
- Min VRAM (best fit)
- 9.2 GB
- Recommended VRAM
- 10.4 GB
- Estimated tok/s
- ~136.5
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Every Qwen3.5 4B 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 | 2 GB | 2.3 GB | 2.6 GB | 8K / 8K | Full GPU | ~436.8 |
| Q5_K_M | 2.5 GB | 2.9 GB | 3.3 GB | 8K / 8K | Full GPU | ~379.8 |
| Q8_0 | 4 GB | 4.6 GB | 5.2 GB | 8K / 8K | Full GPU | ~260 |
| FP16Best fit | 8 GB | 9.2 GB | 10.4 GB | 8K / 8K | Full GPU | ~136.5 |
Apple M4 Ultra is solid pick for Qwen3.5 4B
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