Question 1

Can GTX 1650 4GB run Qwen2.5 1.5B Instruct?

Accepted Answer

Yes, GTX 1650 4GB can run Qwen2.5 1.5B Instruct with a C grade (Tight fit). Expected decode speed: 92.2 tok/s.

Question 2

How much VRAM does Qwen2.5 1.5B Instruct need?

Accepted Answer

Qwen2.5 1.5B Instruct (1.5B parameters) requires approximately 3.3 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Qwen2.5 1.5B Instruct?

Accepted Answer

The recommended quantization for Qwen2.5 1.5B Instruct is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Tight fit	64.0 tok/s	4400 ms	39K
Chat	C	Tight fit	64.0 tok/s	1650 ms	10K
Coding	C	Tight fit	92.2 tok/s	2101 ms	19K
RAG	C	Tight fit	64.0 tok/s	5500 ms	39K
Reasoning	C	Tight fit	64.0 tok/s	3575 ms	19K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	0.6 GB	Low	D33
Q3_K_S	3	0.7 GB	Low	D33
NVFP4	4

Can GTX 1650 4GB run Qwen2.5 1.5B Instruct?

Memory breakdown