Can I Run Qwen 3.6 on NVIDIA GeForce RTX 4080?
Written by Jakub Rusinowski · Last updated July 12, 2026
No — Qwen 3.6 27B at Q4_K_M needs 19.3 GB at 8K context (16.8 GB weights + 2.5 GB KV cache/overhead), and the NVIDIA GeForce RTX 4080's 16 GB leaves it ~3.3 GB short. The cheapest card that runs it is the AMD Radeon RX 7900 XT (20 GB).
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NVIDIA GeForce RTX 4080 Specs
| VRAM | 16 GB |
| Memory Bandwidth | 717 GB/s |
Qwen 3.6 27B on the NVIDIA GeForce RTX 4080: VRAM by quantization
| Quant | VRAM needed | Fits 16 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 58.1 GB | ✗ No | — | — |
| Q8_0 | 32.1 GB | ✗ No | — | Build for this |
| Q6_K | 25.3 GB | ✗ No | — | — |
| Q5_K_M | 22.2 GB | ✗ No | — | Build for this |
| Q4_K_M | 19.3 GB | ✗ No | — | Build for this |
| Q3_K_M | 14.4 GB | ✓ Yes | 8K | — |
| Q2_K | 11.7 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 NVIDIA GeForce RTX 4080: 8K 19.3 GB ✗ · 32K 24.6 GB ✗ · 128K 45.5 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? Qwen 3.6 27B on 16 GB of system RAM, CPU only: runs, but it is tight.
Why It Does Not Fit
Every Qwen 3.6 variant requires more VRAM than the NVIDIA GeForce RTX 4080 provides (16 GB).
Nearest GPU That Fits
AMD Radeon RX 7900 XT (20 GB VRAM).
Qwen 3.6 needs ~19 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
Will Qwen 3.6 run on the NVIDIA GeForce RTX 4080?
No — Qwen 3.6 27B at Q4_K_M needs 19.3 GB at 8K context (16.8 GB weights + 2.5 GB KV cache/overhead), and the NVIDIA GeForce RTX 4080's 16 GB leaves it ~3.3 GB short. The cheapest card that runs it is the AMD Radeon RX 7900 XT (20 GB).
What GPU should I get instead to run Qwen 3.6?
The AMD Radeon RX 7900 XT (20 GB VRAM) is the cheapest upgrade that fits it.
Every Qwen 3.6 size on the NVIDIA GeForce RTX 4080
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Qwen 3.6 35B-A3B | 22.1 GB | Runs at Q3_K_M | — |
| Qwen 3.6 27B | 19.3 GB | Runs at Q3_K_M | — |
Qwen 3.6 on Other GPUs
- Qwen 3.6 on NVIDIA GeForce RTX 5080
- Qwen 3.6 on NVIDIA GeForce RTX 5070 Ti
- Qwen 3.6 on NVIDIA GeForce RTX 5060 Ti 16GB
- Qwen 3.6 on NVIDIA GeForce RTX 4080 Super
- Qwen 3.6 on NVIDIA GeForce RTX 4070 Ti Super
Popular Models on the NVIDIA GeForce RTX 4080
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- Qwen 3 on NVIDIA GeForce RTX 4080
- Qwen 2.5 Family on NVIDIA GeForce RTX 4080
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? | Qwen 3.6 Model Page | NVIDIA GeForce RTX 4080 GPU Page | VRAM calculator | Check Your Hardware