NVIDIA A100 40GB PCIe 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 A100 40GB PCIe can run openai/gpt-oss-20b with Q4 quantization. At approximately 121 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 30GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 10GB | 40GB | 120.75 tok/s | ✅ Fits comfortably |
| Q8 | 20GB | 40GB | 94.91 tok/s | ✅ Fits comfortably |
| FP16 | 41GB | 40GB | 51.46 tok/s | ❌ Not recommended |