Black Forest Labs Flux 1 Dev speed on NVIDIA L40 and quantization-level VRAM fit.
NVIDIA L40 meets the minimum VRAM requirement for Q4 inference of Black Forest Labs Flux 1 Dev. Review the quantization breakdown below to see how higher precision settings impact VRAM and throughput.
NVIDIA L40 can run Black Forest Labs Flux 1 Dev with Q4 quantization. At approximately 166 tokens/second, you can expect Excellent speed - conversational response times under 1 second.
You have 44GB headroom, which is sufficient for system overhead and smooth operation.
| Quantization | VRAM needed | VRAM available | Estimated speed | Verdict |
|---|---|---|---|---|
| Q4 | 4GB | 48GB | 165.64 tok/s | ✅ Fits comfortably |
| Q8 | 7GB | 48GB | 115.95 tok/s | ✅ Fits comfortably |
| FP16 | 14GB | 48GB | 62.94 tok/s | ✅ Fits comfortably |
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NVIDIA L40 can run Black Forest Labs Flux 1 Dev at Q4 with an estimated 166 tok/s.
Q4 inference is estimated to need about 4GB VRAM on this page, while NVIDIA L40 has 48GB available.
If you need more speed or context headroom, compare alternative GPUs below and check higher-tier VRAM options.