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NVIDIA H200 SXM 141GB meets the minimum VRAM requirement for Q4 inference of WeiboAI/VibeThinker-1.5B. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 1GB | 141GB | 855.99 tok/s | ✅ Fits comfortably |
| Q8 | 2GB | 141GB | 608.69 tok/s | ✅ Fits comfortably |
| FP16 | 4GB | 141GB | 340.56 tok/s | ✅ Fits comfortably |