RTX 5090 meets the minimum VRAM requirement for Q4 inference of Qwen/Qwen2.5-0.5B-Instruct. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
RTX 5090 can run Qwen/Qwen2.5-0.5B-Instruct with Q4 quantization. At approximately 315 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 29GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 3GB | 32GB | 314.93 tok/s | ✅ Fits comfortably |
| Q8 | 5GB | 32GB | 215.08 tok/s | ✅ Fits comfortably |
| FP16 | 11GB | 32GB | 106.24 tok/s | ✅ Fits comfortably |