RTX 4080 meets the minimum VRAM requirement for Q4 inference of Qwen/Qwen3-4B. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
RTX 4080 can run Qwen/Qwen3-4B with Q4 quantization. At approximately 122 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 14GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 2GB | 16GB | 121.96 tok/s | ✅ Fits comfortably |
| Q8 | 4GB | 16GB | 78.80 tok/s | ✅ Fits comfortably |
| FP16 | 9GB | 16GB | 42.16 tok/s | ✅ Fits comfortably |