Can I Run Nex-N2 on NVIDIA GeForce RTX 4080?
Written by Jakub Rusinowski · Last updated September 8, 2026
No — Nex-N2 mini at Q4_K_M needs 23.8 GB at 8K context (21.1 GB weights + 2.7 GB KV cache/overhead), and the NVIDIA GeForce RTX 4080's 16 GB leaves it ~7.8 GB short. The cheapest card that runs it is the NVIDIA GeForce RTX 5090 Laptop GPU (24 GB).
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NVIDIA GeForce RTX 4080 Specs
| VRAM | 16 GB |
| Memory Bandwidth | 717 GB/s |
Nex-N2 mini on the NVIDIA GeForce RTX 4080: VRAM by quantization
| Quant | VRAM needed | Fits 16 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 72.7 GB | ✗ No | — | — |
| Q8_0 | 39.9 GB | ✗ No | — | — |
| Q6_K | 31.4 GB | ✗ No | — | — |
| Q5_K_M | 27.5 GB | ✗ No | — | — |
| Q4_K_M | 23.8 GB | ✗ No | — | — |
| Q3_K_M | 17.6 GB | ✗ No | — | — |
| Q2_K | 14.2 GB | ✓ Yes | 8K | — |
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 NVIDIA GeForce RTX 4080: 8K 23.8 GB ✗ · 32K 29.4 GB ✗ · 128K 52 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? Nex-N2 mini on 24 GB of system RAM, CPU only: runs, but it is tight.
Why It Does Not Fit
Every Nex-N2 variant requires more VRAM than the NVIDIA GeForce RTX 4080 provides (16 GB).
Nearest GPU That Fits
NVIDIA GeForce RTX 5090 Laptop GPU (24 GB VRAM).
Nex-N2 needs ~24 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
Nex-N2 on the NVIDIA GeForce RTX 4080 — does it fit?
No — Nex-N2 mini at Q4_K_M needs 23.8 GB at 8K context (21.1 GB weights + 2.7 GB KV cache/overhead), and the NVIDIA GeForce RTX 4080's 16 GB leaves it ~7.8 GB short. The cheapest card that runs it is the NVIDIA GeForce RTX 5090 Laptop GPU (24 GB).
What GPU should I get instead to run Nex-N2?
The NVIDIA GeForce RTX 5090 Laptop GPU (24 GB VRAM) is the cheapest upgrade that fits it.
Every Nex-N2 size on the NVIDIA GeForce RTX 4080
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Nex-N2 Pro | 244.7 GB | Does not fit | — |
| Nex-N2 mini | 23.8 GB | Runs at Q2_K | — |
Nex-N2 on Other GPUs
- Nex-N2 on NVIDIA GeForce RTX 5080
- Nex-N2 on NVIDIA GeForce RTX 5070 Ti
- Nex-N2 on NVIDIA GeForce RTX 5060 Ti 16GB
- Nex-N2 on NVIDIA GeForce RTX 4080 Super
- Nex-N2 on NVIDIA GeForce RTX 4070 Ti Super
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VRAM Tier
Troubleshooting
- CUDA out of memory — why it happens and how to fix it
- Which GGUF quant should I download? (Q4 vs Q5 vs Q8)
Buying Guide
← Can I Run It? | Nex-N2 Model Page | NVIDIA GeForce RTX 4080 GPU Page | VRAM calculator | Check Your Hardware