Can I Run Nemotron Cascade 2 on NVIDIA GeForce RTX 5090?
Written by Jakub Rusinowski · Last updated September 29, 2026
Yes, comfortably — Nemotron-Cascade 2 30B-A3B at Q4_K_M needs 21.7 GB at 8K context (19.1 GB weights + 2.6 GB KV cache/overhead), leaving ~10.3 GB of the NVIDIA GeForce RTX 5090's 32 GB, at ~237 tok/s (est.), with room for up to 32K context.
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NVIDIA GeForce RTX 5090 Specs
| VRAM | 32 GB |
| Memory Bandwidth | 1792 GB/s |
Nemotron-Cascade 2 30B-A3B on the NVIDIA GeForce RTX 5090: VRAM by quantization
| Quant | VRAM needed | Fits 32 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 65.8 GB | ✗ No | — | — |
| Q8_0 | 36.2 GB | ✗ No | — | Build for this |
| Q6_K | 28.5 GB | ✓ Yes | 16K | — |
| Q5_K_M | 25 GB | ✓ Yes | 32K | Build for this |
| Q4_K_M | 21.7 GB | ✓ Yes | 32K | Build for this |
| Q3_K_M | 16.1 GB | ✓ Yes | 64K | — |
| Q2_K | 13 GB | ✓ Yes | 64K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 32 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 Q4_K_M on the NVIDIA GeForce RTX 5090: 8K 21.7 GB · 32K 27.1 GB · 128K 48.9 GB ✗. Past 128K it no longer fits 32 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Nemotron-Cascade 2 30B-A3B on 24 GB of system RAM, CPU only: runs.
Nemotron Cascade 2 Sizes That Fit the NVIDIA GeForce RTX 5090 (at 8K context)
| Nemotron-Cascade 2 30B-A3B | Q4_K_M · 21.7 GB at 8K context · ~237 tok/s (est.) |
At 2 hrs/day, buying (~$1,999) beats renting at $0.34/hr after about 8.2 years.
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Will Nemotron Cascade 2 run on the NVIDIA GeForce RTX 5090?
Yes, comfortably — Nemotron-Cascade 2 30B-A3B at Q4_K_M needs 21.7 GB at 8K context (19.1 GB weights + 2.6 GB KV cache/overhead), leaving ~10.3 GB of the NVIDIA GeForce RTX 5090's 32 GB, at ~237 tok/s (est.), with room for up to 32K context.
Which Nemotron Cascade 2 variant fits best on the NVIDIA GeForce RTX 5090?
Nemotron-Cascade 2 30B-A3B at Q4_K_M quantization needs 21.7 GB at 8K context (19.1 GB weights + 2.6 GB KV cache/overhead), estimated ~237 tokens/sec, up to 32K context.
Nemotron Cascade 2 on Other GPUs
- Nemotron Cascade 2 on Apple M4
- Nemotron Cascade 2 on Apple M2 Pro
- Nemotron Cascade 2 on Apple M1 Pro
- Nemotron Cascade 2 on Apple M5
- Nemotron Cascade 2 on Apple M3 Pro
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