RTX 4090 meets the minimum VRAM requirement for Q4 inference of Qwen/Qwen3-30B-A3B-Instruct-2507-FP8. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
RTX 4090 can run Qwen/Qwen3-30B-A3B-Instruct-2507-FP8 with Q4 quantization. At approximately 95 tokens/second, you can expect Good speed - acceptable for interactive use.
You have 9GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 15GB | 24GB | 95.11 tok/s | ✅ Fits comfortably |
| Q8 | 31GB | 24GB | 67.81 tok/s | ❌ Not recommended |
| FP16 | 61GB | 24GB | 37.89 tok/s | ❌ Not recommended |