Apple M2 Ultra meets the minimum VRAM requirement for Q4 inference of Qwen/Qwen3-4B-Thinking-2507-FP8. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
Apple M2 Ultra can run Qwen/Qwen3-4B-Thinking-2507-FP8 with Q4 quantization. At approximately 103 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 190GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 2GB | 192GB | 102.66 tok/s | ✅ Fits comfortably |
| Q8 | 4GB | 192GB | 74.62 tok/s | ✅ Fits comfortably |
| FP16 | 9GB | 192GB | 39.39 tok/s | ✅ Fits comfortably |