text model · Nemotron 3 · Windows
Can I run Nemotron 3 Ultra 550B-A55B on AMD Radeon RX 7900 XTX (24GB)?
No. Nemotron 3 Ultra 550B-A55B needs ~341 GB even at Q4_K_M, but AMD Radeon RX 7900 XTX (24GB) only has ~23 GB usable.
Needs ~341 GB even at Q4_K_M, but only ~23 GB is usable.
That figure is at a 4k context and moves about ±15% as context length changes.
The gap is about 318 GB: Nemotron 3 Ultra 550B-A55B needs roughly 341 GB at Q4_K_M and AMD Radeon RX 7900 XTX (24GB) leaves only about 23 GB usable for a model. No single tracked device has enough memory; Nemotron 3 Ultra 550B-A55B needs a multi-GPU or high-memory rig.
- Q4_K_M needed
- ~341 GB
- Usable on device
- ~23 GB
- Device memory
- 24 GB
Which quant fits
How to run it
On Windows use LM Studio (Best GUI on Windows, auto-detects CUDA/Vulkan backends.).
- Parameters
- 550B (MoE, 55B active)
- Q4_K_M size
- 334.55 GB
- Q8_0 size
- 544.13 GB
- Context
- 256k
- Memory
- 24 GB vram
- Usable for weights
- ~23 GB
- Power draw
- ~355 W
- Best runtime
- Ollama (ROCm) / llama.cpp ROCm (Linux)
What you can run instead
FAQ
Can AMD Radeon RX 7900 XTX (24GB) run Nemotron 3 Ultra 550B-A55B?
No. Nemotron 3 Ultra 550B-A55B needs ~341 GB even at Q4_K_M, but AMD Radeon RX 7900 XTX (24GB) only has ~23 GB usable.
How much memory does Nemotron 3 Ultra 550B-A55B need?
AMD Radeon RX 7900 XTX (24GB) does not have enough memory. At Q4_K_M the weights are ~334.55 GB; with KV cache and runtime overhead, budget ~341 GB at a 4k context. It is a Mixture-of-Experts model (550B total / 55B active), so all experts must stay in memory; memory tracks total params, not active params.
What is the best tool to run Nemotron 3 Ultra 550B-A55B on Windows?
LM Studio for a simple setup; Ollama (CUDA) for the most speed. AMD GPUs run via Vulkan/ROCm at roughly half CUDA throughput. NVIDIA is the smooth path on Windows.
Embed this
A live badge for your model card or README, updated as the data is. [](https://localmodel.run/can-i-run/nemotron-3-ultra-550b-a55b/amd-rx-7900-xtx-24gb) Sources
Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.