RTX 4090 meets the minimum VRAM requirement for Q4 inference of ibm-granite/granite-3.3-8b-instruct. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
RTX 4090 can run ibm-granite/granite-3.3-8b-instruct with Q4 quantization. At approximately 188 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 20GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 4GB | 24GB | 188.12 tok/s | ✅ Fits comfortably |
| Q8 | 9GB | 24GB | 130.11 tok/s | ✅ Fits comfortably |
| FP16 | 17GB | 24GB | 67.13 tok/s | ✅ Fits comfortably |