NVIDIA RTX 6000 Ada meets the minimum VRAM requirement for Q4 inference of openai/gpt-oss-20b. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
NVIDIA RTX 6000 Ada can run openai/gpt-oss-20b with Q4 quantization. At approximately 91 tokens/second, you can expect Good speed - acceptable for interactive use.
You have 38GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 10GB | 48GB | 91.11 tok/s | ✅ Fits comfortably |
| Q8 | 20GB | 48GB | 66.62 tok/s | ✅ Fits comfortably |
| FP16 | 41GB | 48GB | 40.65 tok/s | ✅ Fits comfortably |