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

Qwen3.5 35B A3B (35B parameters) requires approximately 30.4 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 RTX PRO 4000 Blackwell 24GB provides.

FWon't run

Too heavy

Using Q4_K_M in Ollama

Capabilities:

Fit status

Too heavy

Decode

22.7 tok/s

TTFT

8543 ms

Safe context

13K

Memory

30.4 GB / 24.0 GB

Weights21.4 GB

KV Cache5.5 GB

Runtime1.2 GB

Headroom2.4 GB

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	F	Too heavy	26.4 tok/s	10651 ms	21K
Chat	D	Very compromised (needs ~2.8 GB host RAM)	23.6 tok/s	4470 ms	7K
Coding	F	Too heavy	22.7 tok/s	8543 ms	13K
RAG	F	Too heavy	26.4 tok/s	13313 ms	21K
Reasoning	F	Too heavy	26.4 tok/s	8654 ms	13K

How Qwen3.5 35B A3B (35B params) fits at each quantization level on RTX PRO 4000 Blackwell 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.7 GB	Low	C42
Q3_K_SBest for your GPU	3	17.2 GB	Low	C44

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