RTX 3080 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 3080 can run Qwen/Qwen3-4B with Q4 quantization. At approximately 113 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 8GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 2GB | 10GB | 113.21 tok/s | ✅ Fits comfortably |
| Q8 | 4GB | 10GB | 84.57 tok/s | ✅ Fits comfortably |
| FP16 | 9GB | 10GB | 51.77 tok/s | ⚠️ Tight fit |