NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4: hardware requirements
NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4 needs about 28 GB of memory at Q4 quantization — a 25 GB download plus room for context and overhead. That fits a machine with 64GB RAM.
This is a mixture-of-experts model. Only a fraction of its 18B parameters are used for each token, so it runs faster than its size suggests — but all of it still has to fit in memory. The speed is that of a small model; the memory requirement is that of a large one. More on this →
Will it run on your machine?
Download sizes by quantization
Lower quantization means a smaller file and less memory, at some cost to quality. Q4_K_M is the usual starting point. What is this?
| Quant | Download | RAM @ 4K | RAM @ 32K | Source |
|---|---|---|---|---|
| Published | 25 GB | 28 GB | 29 GB | measured |
“Measured” sizes are read from published GGUF files (nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4). “Estimated” sizes are derived from the parameter count and are typically within a few percent. The RAM columns add the context cache and runtime overhead to the download size.