Nex-N2.5 Max — VRAM Requirements
Written by Jakub Rusinowski · Last updated September 8, 2026
How much GPU VRAM you need to run Nex-N2.5 Nex-N2.5 Max by Nex-AGI locally, a 1600B-parameter model. Figures are quantized weights + KV cache + framework overhead, computed from the model's parameter count and published architecture — not a throughput model. See /en/methodology.
Nex-N2.5 Max needs about 967 GB VRAM at Q4_K_M.
VRAM by Quantization
| Quant | Bits/weight | Weights | Total VRAM |
|---|---|---|---|
| Q2_K | 2.63 | 526.0 GB | 526.8 GB |
| Q3_K_M | 3.41 | 682.0 GB | 682.8 GB |
| Q4_K_M | 4.83 | 966.0 GB | 966.8 GB |
| Q5_K_M | 5.67 | 1134.0 GB | 1134.8 GB |
| Q6_K | 6.56 | 1312.0 GB | 1312.8 GB |
| Q8_0 | 8.50 | 1700.0 GB | 1700.8 GB |
| F16 | 16.00 | 3200.0 GB | 3200.8 GB |
Switch quantization in the interactive calculator, or see the full Nex-N2.5 model page.
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Model creators: paste this into your Hugging Face model card README to link readers straight to this VRAM breakdown.
[](https://llmconfigurator.com/en/vram-calculator/nex-n2-5-max?utm_source=badge&utm_medium=referral&utm_campaign=readme_badge&utm_content=nex-n2-5-max)Estimates only — actual VRAM varies with context length, batch size, runtime and KV-cache settings.