RTX 4090 meets the minimum VRAM requirement for Q4 inference of Qwen/Qwen2-0.5B-Instruct. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
RTX 4090 can run Qwen/Qwen2-0.5B-Instruct with Q4 quantization. At approximately 182 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 21GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 3GB | 24GB | 182.22 tok/s | ✅ Fits comfortably |
| Q8 | 5GB | 24GB | 114.67 tok/s | ✅ Fits comfortably |
| FP16 | 11GB | 24GB | 64.35 tok/s | ✅ Fits comfortably |