Can I Run Nex-N2.5 Max on NVIDIA GeForce RTX 4070 Ti?
Written by Jakub Rusinowski · Last updated September 29, 2026
No. Nex-N2.5 Max needs 967.4 GB at 8K context (966 GB weights + 1.4 GB KV cache/overhead) at Q4_K_M and the NVIDIA GeForce RTX 4070 Ti has only 12 GB. No quantization we publish closes a gap that size.
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The numbers
| Model | Nex-N2.5 Max |
| Parameters | 1.6T (49B active) |
| Quantization | Q4_K_M |
| VRAM needed (8K context) | 967.4 GB |
| NVIDIA GeForce RTX 4070 Ti VRAM | 12 GB |
| Verdict | Does not fit |
Nex-N2.5 Max on the NVIDIA GeForce RTX 4070 Ti: VRAM by quantization
| Quant | VRAM needed | Fits 12 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 3201.4 GB | ✗ No | — | — |
| Q8_0 | 1701.4 GB | ✗ No | — | — |
| Q6_K | 1313.4 GB | ✗ No | — | — |
| Q5_K_M | 1135.4 GB | ✗ No | — | — |
| Q4_K_M | 967.4 GB | ✗ No | — | — |
| Q3_K_M | 683.4 GB | ✗ No | — | — |
| Q2_K | 527.4 GB | ✗ No | — | — |
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 12 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 4070 Ti: 8K 967.4 GB ✗ · 32K 969.1 GB ✗ · 128K 976 GB ✗. Past 8K it no longer fits 12 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
What to do next
Step down to a smaller size in this family — no single consumer card we track fits this one.
No compatible GPU? Nex-N2.5 on 24 GB of system RAM, CPU only: runs, but it is tight.
Running Nex-N2.5 Max on this card:
Other Nex-N2.5 sizes on the NVIDIA GeForce RTX 4070 Ti
- Nex-N2.5 Pro — does not fit (244.7 GB)
- Nex-N2.5 mini — does not fit (23.8 GB)
Nex-N2.5 Max on nearby hardware
- Intel Arc B570 (10 GB) — does not fit
- NVIDIA GeForce RTX 5080 (16 GB) — does not fit
All Nex-N2.5 sizes on the NVIDIA GeForce RTX 4070 Ti | Nex-N2.5 Max model page | NVIDIA GeForce RTX 4070 Ti GPU page | VRAM calculator | Check your hardware