Can I Run Nemotron Cascade 2 on Apple M4 Pro?
Written by Jakub Rusinowski · Last updated September 11, 2026
Only with offload — 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) against the Apple M4 Pro's 18 GB usable memory, so part of it spills onto CPU/system RAM and speed drops sharply.
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Apple M4 Pro Specs
| VRAM | 24 GB unified memory |
| Memory Bandwidth | 273 GB/s |
Nemotron-Cascade 2 30B-A3B on the Apple M4 Pro: VRAM by quantization
| Quant | VRAM needed | Fits 24 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 | ✓ Yes | 16K | — |
| 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 24 GB of unified memory. 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 Apple M4 Pro: 8K 21.7 GB ✗ · 32K 27.1 GB ✗ · 128K 48.9 GB ✗. Past 8K it no longer fits 24 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 Apple M4 Pro provides (24 GB).
Nearest GPU That Fits
Intel Arc Pro B70 (32 GB VRAM).
Nemotron Cascade 2 needs ~22 GB but this GPU has 24 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
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FAQ
Nemotron Cascade 2 on the Apple M4 Pro — does it fit?
Only with offload — 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) against the Apple M4 Pro's 18 GB usable memory, so part of it spills onto CPU/system RAM and speed drops sharply.
What GPU should I get instead to run Nemotron Cascade 2?
The Intel Arc Pro B70 (32 GB VRAM) is the cheapest upgrade that fits it.
Nemotron Cascade 2 on Other GPUs
- Nemotron Cascade 2 on NVIDIA GeForce RTX 4090
- Nemotron Cascade 2 on NVIDIA GeForce RTX 3090
- Nemotron Cascade 2 on AMD Radeon RX 7900 XTX
- Nemotron Cascade 2 on Apple M3
- Nemotron Cascade 2 on Apple M2
VRAM Tier
Troubleshooting
- Ollama: "model requires more system memory than is available"
- Out of memory at long context (the KV cache, not the weights)
Buying Guide
← Can I Run It? | Nemotron Cascade 2 Model Page | Apple M4 Pro GPU Page | VRAM calculator | Check Your Hardware