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

Qwen3.5 35B A3B (35B parameters) requires approximately 34.9 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?

Yes, Mac Studio M2 Ultra 64GB can run Qwen3.5 35B A3B with a C grade (Runs well). Expected decode speed: 21.7 tok/s.

CUsable

Runs well

Using Q4_K_M in Ollama

Capabilities:

Fit status

Runs well

Decode

21.7 tok/s

TTFT

8908 ms

Safe context

21K

Memory

34.9 GB / 46.1 GB

Weights21.3 GB

KV Cache5.5 GB

Runtime1.2 GB

Headroom6.9 GB

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Tight fit	21.7 tok/s	12957 ms	36K
Chat	C	Runs well	21.7 tok/s	4859 ms	11K
Coding	C	Runs well	21.7 tok/s	8908 ms	21K
RAG	C	Tight fit	21.7 tok/s	16197 ms	36K
Reasoning	C	Runs well	21.7 tok/s	10528 ms	21K

How Qwen3.5 35B A3B (35B params) fits at each quantization level on Mac Studio M2 Ultra 64GB (46.1 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.7 GB	Low	D36
Q3_K_S	3	17.2 GB	Low	D38
NVFP4	4

HuggingFace

huggingface-cli download hf-unsloth--qwen3-5-35b-a3b-gguf

Upgrade options

RTX A6000 48GBBudget pick

C27.3 tok/s decode

~$4,650 MSRP

NVIDIA L40 48GBBest value

C31.6 tok/s decode

~$5,500 MSRP

RTX PRO 5000 Blackwell 48GBBiggest leap

B52.9 tok/s decode