Written by Jakub Rusinowski · Last updated August 15, 2026
No. Nemotron Cascade 2 70B needs 42.3 GB at Q4_K_M and the AMD Radeon RX 7900 XT has only 20 GB. No quantization we publish closes a gap that size.
| Model | Nemotron Cascade 2 70B |
| Parameters | 70B |
| Quantization | Q4_K_M |
| VRAM needed | 42.3 GB |
| AMD Radeon RX 7900 XT VRAM | 20 GB |
| Verdict | Does not fit |
Either step down to a smaller size in this family, or move to a NVIDIA RTX 6000 Ada Generation (48 GB), the cheapest card we track with enough VRAM.
Cheapest card we track with enough VRAM for Nemotron Cascade 2 70B:
Nemotron Cascade 2 70B needs ~42 GB but this GPU has 20 GB. Rent a A100 (80 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
All Nemotron Cascade 2 sizes on the AMD Radeon RX 7900 XT | VRAM calculator for Nemotron Cascade 2 70B | AMD Radeon RX 7900 XT GPU page | Check your hardware