Can I Run Nemotron 3.5 on NVIDIA GeForce RTX 4090?
Written by Jakub Rusinowski · Last updated October 15, 2026
Yes, but it's tight — Nemotron 3.5 Bolt 74B at IQ2_XXS QAD needs 22.9 GB at 8K context (22 GB weights + 0.9 GB KV cache/overhead), leaving ~1.1 GB of the NVIDIA GeForce RTX 4090's 24 GB, at ~194 tok/s (est.), with room for up to 128K context.
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NVIDIA GeForce RTX 4090 Specs
| VRAM | 24 GB |
| Memory Bandwidth | 1008 GB/s |
Nemotron 3.5 Bolt 74B on the NVIDIA GeForce RTX 4090: VRAM by quantization
| Quant | VRAM needed | Fits 24 GB? | Max context | Whole PC |
|---|---|---|---|---|
| BF16 | 150.6 GB | ✗ No | — | — |
| IQ2_XXS QAD | 22.9 GB | ✓ Yes | 128K | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 24 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At IQ2_XXS QAD on the NVIDIA GeForce RTX 4090: 8K 22.9 GB · 32K 23.1 GB · 128K 23.9 GB. Every window this model publishes still fits 24 GB.
Nemotron 3.5 Sizes That Fit the NVIDIA GeForce RTX 4090 (at 8K context)
| Nemotron 3.5 Bolt 74B | IQ2_XXS QAD · 22.9 GB at 8K context · ~194 tok/s (est.) |
| Nemotron 3.5 Lightning 30B-A3B | Q4_K_M · 20.7 GB at 8K context · ~195 tok/s (est.) |
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FAQ
Nemotron 3.5 on the NVIDIA GeForce RTX 4090 — does it fit?
Yes, but it's tight — Nemotron 3.5 Bolt 74B at IQ2_XXS QAD needs 22.9 GB at 8K context (22 GB weights + 0.9 GB KV cache/overhead), leaving ~1.1 GB of the NVIDIA GeForce RTX 4090's 24 GB, at ~194 tok/s (est.), with room for up to 128K context.
Which Nemotron 3.5 variant fits best on the NVIDIA GeForce RTX 4090?
Nemotron 3.5 Bolt 74B at IQ2_XXS QAD quantization needs 22.9 GB at 8K context (22 GB weights + 0.9 GB KV cache/overhead), estimated ~194 tokens/sec, up to 128K context.
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VRAM Tier
Troubleshooting
- CUDA out of memory — why it happens and how to fix it
- Which GGUF quant should I download? (Q4 vs Q5 vs Q8)
Buying Guide
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