Can I Run Nemotron Cascade 2 on AMD Radeon RX 9070?
Written by Jakub Rusinowski · Last updated September 11, 2026
No — 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), and the AMD Radeon RX 9070's 16 GB leaves it ~5.7 GB short. The cheapest card that runs it is the NVIDIA GeForce RTX 5090 Laptop GPU (24 GB).
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AMD Radeon RX 9070 Specs
| VRAM | 16 GB |
| Memory Bandwidth | 640 GB/s |
Nemotron-Cascade 2 30B-A3B on the AMD Radeon RX 9070: VRAM by quantization
| Quant | VRAM needed | Fits 16 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 65.8 GB | ✗ No | — | — |
| Q8_0 | 36.2 GB | ✗ No | — | Build for this |
| Q6_K | 28.5 GB | ✗ No | — | — |
| Q5_K_M | 25 GB | ✗ No | — | Build for this |
| Q4_K_M | 21.7 GB | ✗ No | — | Build for this |
| Q3_K_M | 16.1 GB | ✗ No | — | — |
| Q2_K | 13 GB | ✓ Yes | 16K | — |
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 16 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 AMD Radeon RX 9070: 8K 21.7 GB ✗ · 32K 27.1 GB ✗ · 128K 48.9 GB ✗. Past 8K it no longer fits 16 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.
Why It Does Not Fit
Every Nemotron Cascade 2 variant requires more VRAM than the AMD Radeon RX 9070 provides (16 GB).
Nearest GPU That Fits
NVIDIA GeForce RTX 5090 Laptop GPU (24 GB VRAM).
Nemotron Cascade 2 needs ~22 GB but this GPU has 16 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
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FAQ
Can I run Nemotron Cascade 2 on the AMD Radeon RX 9070?
No — 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), and the AMD Radeon RX 9070's 16 GB leaves it ~5.7 GB short. The cheapest card that runs it is the NVIDIA GeForce RTX 5090 Laptop GPU (24 GB).
What's the cheapest GPU that runs Nemotron Cascade 2?
The NVIDIA GeForce RTX 5090 Laptop GPU (24 GB VRAM) is the cheapest upgrade that fits it.
Nemotron Cascade 2 on Other GPUs
- Nemotron Cascade 2 on NVIDIA GeForce RTX 5080
- Nemotron Cascade 2 on NVIDIA GeForce RTX 5070 Ti
- Nemotron Cascade 2 on NVIDIA GeForce RTX 5060 Ti 16GB
- Nemotron Cascade 2 on NVIDIA GeForce RTX 4080 Super
- Nemotron Cascade 2 on NVIDIA GeForce RTX 4080
Popular Models on the AMD Radeon RX 9070
VRAM Tier
Troubleshooting
- Ollama: "model requires more system memory than is available"
- Which GGUF quant should I download? (Q4 vs Q5 vs Q8)
Buying Guide
← Can I Run It? | Nemotron Cascade 2 Model Page | AMD Radeon RX 9070 GPU Page | VRAM calculator | Check Your Hardware