Question 1

Can RTX 3080 Ti 12GB run Yi 1.5 9B Chat?

Accepted Answer

Yes, RTX 3080 Ti 12GB can run Yi 1.5 9B Chat with a B grade (Runs well). Expected decode speed: 119.6 tok/s.

Question 2

How much VRAM does Yi 1.5 9B Chat need?

Accepted Answer

Yi 1.5 9B Chat (9B parameters) requires approximately 9.3 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Yi 1.5 9B Chat?

Accepted Answer

The recommended quantization for Yi 1.5 9B Chat is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Tight fit	122.9 tok/s	2291 ms	36K
Chat	B	Runs well	122.9 tok/s	859 ms	11K
Coding	B	Runs well	119.6 tok/s	1619 ms	21K
RAG	C	Tight fit	122.9 tok/s	2863 ms	36K
Reasoning	B	Runs well	122.9 tok/s	1861 ms	21K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	3.5 GB	Low	D35
Q3_K_S	3	4.4 GB	Low	D37
NVFP4	4

Can RTX 3080 Ti 12GB run Yi 1.5 9B Chat?

Memory breakdown