Text model · Nemotron 3
NE Nemotron 3 Ultra 550B-A55B: RAM and VRAM requirements
Nemotron 3 Ultra 550B-A55B needs about 341 GB to run at Q4_K_M (the Q4_K_M GGUF file is ~334.55 GB to download; KV cache and overhead add the rest), or about 550.5 GB at Q8_0. The lightest hardware that runs it is a high-memory machine.
Nemotron 3 family · 550B params (Mixture-of-Experts: activates only 55B of 550B params per token, so generation is faster than the total size suggests) · released Jun 2026.
Shopping for hardware? See what runs Nemotron 3 Ultra 550B-A55B →
Q4_K_M and Q8_0 are GGUF download (file) sizes. Memory @ Q4 includes the KV cache and overhead, so it runs larger than the file on disk.
Will it run on your device?
Nemotron 3 Ultra 550B-A55B runs on 0 of 40 tracked devices at Q4_K_M.
Memory breakdown
How context length changes it
Longer context grows the KV cache, which for Nemotron 3 Ultra 550B-A55B is sized by its 55B active params, not the full 550B. It needs ~341 GB at 4k and ~515.4 GB at 128k.
Quantization sizes
| Quantization | Size on disk |
|---|---|
| Q2_K | 230.3 GB est |
| Q3_K_M | 268.8 GB est |
| Q4_K_M (default) | 334.55 GB |
| Q5_K_M | 391.9 GB est |
| Q6_K | 451 GB est |
| Q8_0 | 544.13 GB |
| FP16 | 1100 GB est |
Lower quant = smaller and faster, slightly lower quality. Q4_K_M is the common default.
Run it
llama-cli -hf unsloth/NVIDIA-Nemotron-3-Ultra-550B-A55B-GGUF:Q4_K_M lms get unsloth/NVIDIA-Nemotron-3-Ultra-550B-A55B-GGUF Which devices can run Nemotron 3 Ultra 550B-A55B?
Apple Silicon Macs
- Apple M1 (8GB) No
- Apple M2 (16GB) No
- Apple M4 (16GB) No
- Apple M5 (16GB) No
- Apple M3 Pro (18GB) No
- Apple M4 (24GB) No
- Apple M4 Pro (24GB) No
- Apple M5 (32GB) No
- Apple M4 Pro (48GB) No
- Apple M5 Pro (48GB) No
- Apple M4 Max (64GB) No
- Apple M4 Max (128GB) No
- Apple M5 Max (128GB) No
- Apple M3 Ultra (256GB) No
RAM-only laptops
iPhone & iPad
Android
NVIDIA GPUs
Same job, different size
Pick by what fits your memory: step down to free up VRAM, or step up if you have headroom.
Similar models
Head-to-head
FAQ
How much VRAM or RAM does Nemotron 3 Ultra 550B-A55B need?
At Q4_K_M, Nemotron 3 Ultra 550B-A55B needs about 341 GB (weights ~334.55 GB + KV cache + overhead) at a 4k context. At Q8_0 budget ~550.5 GB.
What is the Q4_K_M GGUF file size of Nemotron 3 Ultra 550B-A55B?
The Q4_K_M GGUF file is about 334.55 GB to download, and the Q8_0 GGUF is about 544.13 GB. That is the weights file on disk; to run it you also need room for the KV cache and overhead, so budget ~341 GB of memory at Q4_K_M.
Can Nemotron 3 Ultra 550B-A55B run on a laptop?
Nemotron 3 Ultra 550B-A55B is large; you need a high-memory Mac or multi-GPU setup at Q4_K_M.
Is Nemotron 3 Ultra 550B-A55B cheaper to run because it is a MoE model?
It is faster, not lighter. Nemotron 3 Ultra 550B-A55B activates only 55B of 550B params per token (so it runs quickly), but all experts must stay in memory, so it still needs memory for the full 550B.
Can I use Nemotron 3 Ultra 550B-A55B commercially?
Yes. Nemotron 3 Ultra 550B-A55B is licensed OpenMDW-1.1, which permits commercial use.
Understand the numbers
Short guides to the ideas behind Nemotron 3 Ultra 550B-A55B's memory and quant figures.
NVIDIA's largest Nemotron 3: 550B total / 55B active, Latent-MoE + multi-token-prediction, NVFP4-trained. 256K context by default, up to 1M. Q4 is ~335GB split across 9 GGUF shards (unsloth UD-Q4_K_M); strictly multi-GPU or big-cluster territory, listed for the record like DeepSeek-V4-Pro. Cloud-only on Ollama (no downloadable tag). Linux Foundation's OpenMDW-1.1 license: permissive, free commercial use.
Sources
Last validated 2026-08-03. Memory figures are estimates. See methodology.