I enjoy this brand of fan but have a need for high cfm. which of the silent 4 120mm models yeilds the highest cfm?

The highest CFM 120mm model is the Silent Wings Pro 4 120mm PWM. To be sure you are getting the correct one, make sure the specifications page lists the RPM as 3,000. Also, be aware that this model has a small 3-way switch on the back of the fan hub labeled "M/HS/UHS" which you will want to set to the "UHS" setting to enable the maximum speed.

Will this work with a 240mm AIO?

Should be fine as they are designed to be placed on air coolers just make sure that you have enough space because of size difference like width

Silent wings pro 4 vs silent wings 4?

The Pro is more expensive and designed specifically for liquid cooling radiators.

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Description

🖤 Silent power that keeps your rig cool and your focus sharper.

WHISPER QUIET OPERATION - Experience near-silent performance even at full 2500 RPM speed—because noise is so last decade.
COMPACT YET POWERFUL DESIGN - Sleek 120mm frame fits seamlessly into any build while delivering pro-grade cooling efficiency.
PRECISION ENGINEERED FAN BLADES - Optimized for peak airflow and pressure, ensuring your system stays cool under pressure.
VERSATILE ANTI VIBRATION MOUNTING - Push pins or screws—choose your installation style for a secure, rattle-free fit.
ADVANCED 6 POLE MOTOR FLUID DYNAMIC BEARING - Minimizes vibration and maximizes smoothness for long-lasting, reliable cooling.

The be quiet! Silent Wings 4 120mm PWM fan delivers high-speed cooling at 2500 RPM with an impressive 76.7 CFM airflow, all while maintaining an ultra-low noise level of 31.2 dB. Featuring optimized fan blades, a 6-pole motor with fluid-dynamic bearings, and versatile anti-vibration mounting options, this premium fan ensures efficient, whisper-quiet operation for professional-grade desktop cooling.

Specifications

Product Dimensions	4.72"L x 0.98"W x 4.72"H
Brand	be quiet!
Power Connector Type	4-Pin
Voltage	12 Volts
Wattage	2.4 watts
Cooling Method	Fan
Compatible Devices	Desktop
Noise Level	31.2 dB
Material	Plastic
Maximum Rotational Speed	2500 RPM
Air Flow Capacity	76.7 Cubic Feet Per Minute
Global Trade Identification Number	04260052188866
Manufacturer	be quiet!
Number of Items	1
Series	BL094
Item model number	BL094
Item Weight	10.9 ounces
Item Dimensions LxWxH	4.72 x 4.72 x 0.98 inches
Color	Black
Computer Memory Type	DIMM
ASIN	B0B6WPZFBX
Date First Available	July 21, 2022

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