Written by Jakub Rusinowski · Last updated August 15, 2026
Not at Q4_K_M — that needs 42.3 GB and the NVIDIA GeForce RTX 5090 has 32 GB. Drop to Q2_K and it fits in 26.2 GB, with up to 16K of context.
| Model | Nemotron Cascade 2 70B |
| Parameters | 70B |
| Quantization | Q4_K_M |
| VRAM needed | 42.3 GB |
| NVIDIA GeForce RTX 5090 VRAM | 32 GB |
| Verdict | Runs at a lower quant |
| Fits at | Q2_K (26.2 GB) |
| Max context | 16K |
Quantize to Q2_K. That is the cheapest fix — it costs some quality but no money.
Running Nemotron Cascade 2 70B on this card:
Nemotron Cascade 2 70B needs ~42 GB but this GPU has 32 GB. Rent a A100 (80 GB)-class GPU by the hour instead of buying one:
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All Nemotron Cascade 2 sizes on the NVIDIA GeForce RTX 5090 | VRAM calculator for Nemotron Cascade 2 70B | NVIDIA GeForce RTX 5090 GPU page | Check your hardware