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

Qwen3.5 35B A3B (35B parameters) requires approximately 31.2 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, RTX PRO 4500 Blackwell 32GB can run Qwen3.5 35B A3B with a C grade (Runs with offload). Expected decode speed: 30.2 tok/s.

CUsable

Runs with offload

Using Q4_K_M in Ollama

Capabilities:

Fit status

Runs with offload

Decode

30.2 tok/s

TTFT

6407 ms

Safe context

16K

Memory

31.2 GB / 32.0 GB

Weights21.4 GB

KV Cache5.5 GB

Runtime1.2 GB

Headroom3.2 GB

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Very compromised (needs ~2.7 GB host RAM)	31.6 tok/s	8898 ms	28K
Chat	C	Tight fit	35.3 tok/s	2996 ms	9K
Coding	C	Runs with offload	30.2 tok/s	6407 ms	16K
RAG	C	Very compromised (needs ~2.7 GB host RAM)	31.6 tok/s	11122 ms	28K
Reasoning	C	Runs with offload	35.3 tok/s	6490 ms

How Qwen3.5 35B A3B (35B params) fits at each quantization level on RTX PRO 4500 Blackwell 32GB (32.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.7 GB	Low	D39
Q3_K_S	3	17.2 GB	Low	C41
NVFP4	4

HuggingFace

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

Upgrade options

Mac Studio M2 Ultra 64GBBudget pick

C21.7 tok/s decode

~$3,999 MSRP

Mac Studio M1 Ultra 64GBBest value

C20.6 tok/s decode

~$3,999 MSRP

NVIDIA A100 40GBBiggest leap