How much VRAM does Qwen3.5 35B A3B need?

Qwen3.5 35B A3B (35B parameters) requires approximately 29.6 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen3.5 35B A3B?

The recommended quantization for Qwen3.5 35B A3B is Q4_K_M, which balances quality and memory efficiency.

Can it run?

No, Qwen3.5 35B A3B requires more memory than RX 6900 XT 16GB provides.

FWon't run

Too heavy

Using Q4_K_M in Ollama

Capabilities:

Fit status

Too heavy

Decode

17.3 tok/s

TTFT

11212 ms

Safe context

Memory

29.6 GB / 16.0 GB

Weights21.4 GB

KV Cache5.5 GB

Runtime1.2 GB

Headroom1.6 GB

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	F	Too heavy	13.7 tok/s	20601 ms	15K
Chat	F	Too heavy	13.7 tok/s	7725 ms	5K
Coding	F	Too heavy	17.3 tok/s	11212 ms	9K
RAG	F	Too heavy	13.7 tok/s	25751 ms	15K
Reasoning	F	Too heavy	13.7 tok/s	16738 ms	9K

How Qwen3.5 35B A3B (35B params) fits at each quantization level on RX 6900 XT 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.7 GB	Low	C45
Q3_K_S	3	17.2 GB	Low	F0
NVFP4	4

Upgrade options

Mac mini M4 64GBBudget pick

C4 tok/s decode

~$1,099 MSRP

MacBook Pro M4 Pro 64GBBest value

C9.8 tok/s decode

~$1,599 MSRP

NVIDIA A100 40GBBiggest leap