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

Qwen3.5 35B A3B (35B parameters) requires approximately 55.7 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 M3 Ultra 256GB can run Qwen3.5 35B A3B with a C grade (Runs well). Expected decode speed: 24.9 tok/s.

CUsable

Runs well

Using Q4_K_M in Ollama

Capabilities:

Fit status

Runs well

Decode

24.9 tok/s

TTFT

7764 ms

Safe context

53K

Memory

55.7 GB / 184.3 GB

Weights21.4 GB

KV Cache5.5 GB

Runtime1.2 GB

Headroom27.6 GB

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Runs well	24.9 tok/s	11294 ms	96K
Chat	C	Runs well	24.9 tok/s	4235 ms	28K
Coding	C	Runs well	24.9 tok/s	7764 ms	53K
RAG	C	Runs well	24.9 tok/s	14117 ms	96K
Reasoning	C	Runs well	24.9 tok/s	9176 ms	53K

How Qwen3.5 35B A3B (35B params) fits at each quantization level on Mac Studio M3 Ultra 256GB (184.3 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.7 GB	Low	D31
Q3_K_S	3	17.2 GB	Low	D31
NVFP4	4

HuggingFace

huggingface-cli download hf-lmstudio-community--qwen3-5-35b-a3b-gguf

Upgrade options

AMD Instinct MI350X 288GBBudget pick

C273.5 tok/s decode

~$8,000 MSRP

AMD Instinct MI300X 192GBBest value

C193.6 tok/s decode

~$15,000 MSRP

H100 NVL 188GBBiggest leap