Can the RTX 3080 Ti run Qwen3.5 4B?
Yes. Qwen3.5 4B fits the RTX 3080 Ti's 12 GB at Q4_K_M (about 4.8 GB needed), running at an estimated 174 tok/s. There's room for up to FP16 if you want higher quality.
Every quantization
Qwen3.5 4B (4.7B) on 12 GB
| Quant | Weights | Needs | Fit | Est. speed |
|---|---|---|---|---|
| Q4_K_M | 3 GB | 4.8 GB | Fits easily | ~174 tok/s |
| Q5_K_M | 3 GB | 4.8 GB | Fits easily | ~174 tok/s |
| Q8_0 | 5 GB | 6.8 GB | Fits easily | ~105 tok/s |
| FP16 | 9 GB | 10.8 GB | Tight | ~58 tok/s |
Estimates. Needs = weights + 1.8 GB for KV cache and runtime at modest context. Speed is single-stream decode scaled from the RTX 3080 Ti's 912 GB/s bandwidth (XiongjieDai/GPU-Benchmarks-on-LLM-Inference). Long contexts need more memory and run slower.
Run it
Copy, paste, go
llama-server -hf unsloth/Qwen3.5-4B-GGUF -ngl 99Ollama pulls a Q4 build by default. Pick a larger quant only if the table above says it fits. Full Qwen3.5 4B details →
Compare
Same model, other hardware - and other models on this card
Qwen3.5 4B on other hardware
- RTX 5090~343 tok/s
- RTX 5090 D~342 tok/s
- RTX 6000D~300 tok/s
- RTX 4090~209 tok/s
- RTX 3090~183 tok/s
- Radeon RX 7900 XTX~183 tok/s
- RTX 5080~183 tok/s
- RTX 5080 Mobile~171 tok/s
Also runs on the RTX 3080 Ti
- Qwen3 14B~65 tok/s
- Gemma 4 12B~75 tok/s
- Qwen3.5 9B~87 tok/s
- Llama 3.1 8B~95 tok/s
- Mistral-7B-Instruct-v0.2~131 tok/s
- Qwen3-4B-Instruct-2507~261 tok/s
- NVIDIA Nemotron 3 Nano 4B~261 tok/s
- Phi-4 Mini~209 tok/s
Frequently asked
Quick answers
Can the NVIDIA RTX 3080 Ti run Qwen3.5 4B?
Yes. Qwen3.5 4B fits the RTX 3080 Ti's 12 GB at Q4_K_M (about 4.8 GB needed), running at an estimated 174 tok/s. There's room for up to FP16 if you want higher quality.
How much VRAM does Qwen3.5 4B need?
About 3 GB of weights at Q4_K_M, 5 GB at Q8_0 and 9 GB at FP16. Add roughly 1.8 GB for the KV cache and runtime at modest context lengths.
How fast is Qwen3.5 4B on the RTX 3080 Ti?
Roughly 174 tokens per second at Q4_K_M (single user, llama.cpp-style decode). This is an estimate from the RTX 3080 Ti's 912 GB/s memory bandwidth.