Question 1

Can MacBook Pro M4 Pro 24GB run Qwen3.5 4B?

Accepted Answer

Yes, MacBook Pro M4 Pro 24GB can run Qwen3.5 4B with a C grade (Runs well). Expected decode speed: 72.7 tok/s.

Question 2

How much VRAM does Qwen3.5 4B need?

Accepted Answer

Qwen3.5 4B (4B parameters) requires approximately 7.0 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Qwen3.5 4B?

Accepted Answer

The recommended quantization for Qwen3.5 4B is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Runs well	86.2 tok/s	3269 ms	74K
Chat	C	Runs well	86.2 tok/s	1226 ms	20K
Coding	C	Runs well	72.7 tok/s	2662 ms	39K
RAG	C	Runs well	86.2 tok/s	4086 ms	74K
Reasoning	C	Runs well	86.2 tok/s	2656 ms	39K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	1.6 GB	Low	D31
Q3_K_S	3	2.0 GB	Low	D32
NVFP4	4

Can MacBook Pro M4 Pro 24GB run Qwen3.5 4B?

Memory breakdown