Qwen3.5 9B on NVIDIA GeForce GTX 1660 Ti

Can the NVIDIA GeForce GTX 1660 Ti run Qwen3.5 9B?

82 pts

Yes, with little memory to spare

Tight fit. At Q3_K_M it needs about 5.9 GB of 6.0 GB usable, with an estimated speed of 47.4 tok/s.

Best quant: Q3_K_M
Generation speed: 47.4 tok/s
Prompt processing: 403 tok/s
First token (1K prompt): 2.5 s
Largest safe context: 11K

Download Qwen3.5 9B

Recommended for the NVIDIA GeForce GTX 1660 Ti: Q3_K_M. Every other quantization has its own download link in the table below.

Quickest · Ollama

One command downloads a ready-to-run version and starts a chat.

ollama run qwen3.5:9b

Get Ollama at ollama.com/download (opens in a new tab) · model page (opens in a new tab)

Quantized files · GGUF

Works in LM Studio, llama.cpp, Jan and Ollama. No sign-in needed.

Download the Q3_K_M file (opens in a new tab)

huggingface.co/unsloth/Qwen3.5-9B-GGUF (opens in a new tab)

ollama run hf.co/unsloth/Qwen3.5-9B-GGUF:Q3_K_M

Original weights · Hugging Face

Full-precision files from Alibaba, for fine-tuning, vLLM, Transformers.

huggingface.co/Qwen/Qwen3.5-9B (opens in a new tab)

No sign-in needed.

Official repo · GitHub

Reference code, inference scripts and docs from Alibaba. The weights themselves download from Hugging Face.

github.com/QwenLM/Qwen3.8 (opens in a new tab)

git clone https://github.com/QwenLM/Qwen3.8

Qwen’s current repo: Qwen3.5 and Qwen3.6 redirect here.

Links checked 5 days ago against Hugging Face, Ollama and GitHub.

How the A grade is scored

Every result gets up to 100 points from four parts. The points decide the letter grade.

Model qualityEditorial quality tier of the model, scaled by the quantization or precision used.	28.7 / 45
Memory fitFull marks when everything sits in GPU or unified memory; fewer when part spills to system RAM.	24.0 / 25
SpeedGeneration speed against a 40 tokens/s target for LLMs, or render time against a target for image and video.	15.0 / 15
Memory useRewards using the memory you have, so a bigger, better variant beats a tiny one that leaves most memory idle.	15.0 / 15
Total	82.7 / 100	82 ptsGreat (A) · 82 of 100 points: Model quality 28.7/45, Memory fit 24.0/25, Speed 15.0/15, Memory use 15.0/15

Grade scale: S 85+ · A 72+ · B 58+ · C 42+ · D 25+ · F under 25 points.

Every quantization on the NVIDIA GeForce GTX 1660 Ti

Quant	Memory needed	Available	Speed	Fit	Grade · points	Download
`Q2_K`	5.0 GB	6.0 GB	60.2 tok/s	Runs well	78 ptsGreat (A) · 78 of 100 points: Model quality 23.9/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 15.0/15	GGUF (UD-Q2_K_XL) (opens in a new tab)
`Q3_K_M`	5.9 GB	6.0 GB	47.4 tok/s	Tight fit	82 ptsGreat (A) · 82 of 100 points: Model quality 28.7/45, Memory fit 24.0/25, Speed 15.0/15, Memory use 15.0/15	GGUF (opens in a new tab)
`Q4_K_M`	7.1 GB	6.0 GB	23.0 tok/s	Runs with offload	68 ptsGood (B) · 68 of 100 points: Model quality 32.5/45, Memory fit 10.0/25, Speed 11.4/15, Memory use 15.0/15	GGUF (opens in a new tab)
`Q5_K_M`	8.0 GB	6.0 GB	15.3 tok/s	Runs with offload	67 ptsGood (B) · 67 of 100 points: Model quality 33.2/45, Memory fit 10.0/25, Speed 9.3/15, Memory use 15.0/15	GGUF (opens in a new tab)
`Q6_K`	9.1 GB	6.0 GB	11.1 tok/s	Heavy offload	60 ptsGood (B) · 60 of 100 points: Model quality 33.9/45, Memory fit 4.0/25, Speed 7.9/15, Memory use 15.0/15	GGUF (opens in a new tab)
`Q8_0`	11.4 GB	6.0 GB	6.8 tok/s	Heavy offload	59 ptsGood (B) · 59 of 100 points: Model quality 34.2/45, Memory fit 4.0/25, Speed 6.2/15, Memory use 15.0/15	GGUF (opens in a new tab)
`F16`	20.5 GB	6.0 GB	2.5 tok/s	Heavy offload	56 ptsUsable (C) · 56 of 100 points: Model quality 34.2/45, Memory fit 4.0/25, Speed 3.7/15, Memory use 15.0/15	GGUF (opens in a new tab) Original weights (opens in a new tab)

Memory figures assume 8K of context. Longer conversations or documents grow the KV cache.

Other hardware that runs it

89 ptsExcellent (S) · 89 of 100 points: Model quality 34.2/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 15.0/15 NVIDIA GeForce RTX 5090 F16 · 53.5 tok/s
89 ptsExcellent (S) · 89 of 100 points: Model quality 34.2/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 15.0/15 NVIDIA GeForce RTX 4070 Ti SUPER Q8_0 · 43.5 tok/s
89 ptsExcellent (S) · 89 of 100 points: Model quality 34.2/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 15.0/15 NVIDIA GeForce RTX 4080 SUPER Q8_0 · 47.7 tok/s
89 ptsExcellent (S) · 89 of 100 points: Model quality 34.2/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 15.0/15 NVIDIA GeForce RTX 5070 Ti Q8_0 · 58.0 tok/s
89 ptsExcellent (S) · 89 of 100 points: Model quality 34.2/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 15.0/15 NVIDIA GeForce RTX 5080 Q8_0 · 62.2 tok/s
88 ptsExcellent (S) · 88 of 100 points: Model quality 33.9/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 15.0/15 NVIDIA GeForce RTX 4070 SUPER Q6_K · 44.5 tok/s

Estimates come from published hardware specs and our open formulas, not from running the model on your machine. Real speed varies with runtime, drivers and settings. Numbers marked “Measured” come from a linked benchmark.