Question 1

Can Radeon Pro W7900 48GB run Qwen3.5 9B?

Accepted Answer

Yes, Radeon Pro W7900 48GB can run Qwen3.5 9B with a C grade (Runs well). Expected decode speed: 113.3 tok/s.

Question 2

How much VRAM does Qwen3.5 9B need?

Accepted Answer

Qwen3.5 9B (9B parameters) requires approximately 12.9 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Qwen3.5 9B?

Accepted Answer

The recommended quantization for Qwen3.5 9B is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Runs well	92.9 tok/s	3033 ms	107K
Chat	C	Runs well	92.9 tok/s	1137 ms	31K
Coding	C	Runs well	113.3 tok/s	1709 ms	60K
RAG	C	Runs well	92.9 tok/s	3791 ms	107K
Reasoning	C	Runs well	92.9 tok/s	2464 ms	60K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	3.5 GB	Low	D31
Q3_K_S	3	4.4 GB	Low	D31
NVFP4	4

Can Radeon Pro W7900 48GB run Qwen3.5 9B?

Memory breakdown