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Black 140mm PWM case fan with ARGB lighting on front and rear, 25mm thick

be quiet!

be quiet! Light Wings 140mm PWM High Speed ARGB Case Fan

SKU CH-EF5A-KNBCV

A 140 mm PWM fan delivers 70 to 75 CFM at 2,200 RPM with 31.0 dBA noise, ARGB lighting on both sides and a 60,000-hour rifle bearing

  • Fan Counts1 Fan
  • Fan ControllerNo Controller
  • TypeCase Fan
  • CompatibilityCase
  • Fan Size140mm
  • Fan Thickness25mm

Edition 140mm PWM high-speed

Struck-through versions exist but are not stocked here.

Color Black

  • Black
  • White

Struck-through versions exist but are not stocked here.

Option 1-Pack

  • 1-Pack
  • 3-Pack

Struck-through versions exist but are not stocked here.

  • ARGB lighting on both sides with 20 LEDs
  • Nine silence-optimized blades deliver high pressure at 2.3mm/H2O
  • 0 dBA at 2200 RPM for quiet performance
  • Rifle bearing rated for 60000 hours
  • PWM control via 4-pin motherboard connector

140mm PWM ARGB case fan

The be quiet! Light Wings 140mm PWM High Speed is a single 140mm case fan with 25mm thickness and a 4-pin PWM connector. It targets builders who want strong airflow for radiators or heatsinks while adding addressable RGB lighting to their system. The rifle bearing is rated for 60000 hours of operation. Buyers needing a fan controller in the box or a multi-fan kit should look elsewhere.

Thermals noise and power draw

Nine silence-optimised blades deliver 70-75 CFM airflow and up to 2.3mm/H2O static pressure at 2200 RPM. The manufacturer states a noise level of 31.0 dBA at maximum speed, giving a high performance-to-noise ratio for demanding cooling tasks. PWM control allows the motherboard to reduce speed and noise when full pressure is not required. No separate power adapter is included.

ARGB lighting and synchronization

Twenty ARGB LEDs illuminate both the front and rear rings, providing visible lighting from either side of the fan. Effects and colours are managed through the motherboard's 5V ARGB header and software, enabling synchronization with other compatible components. No standalone lighting controller or remote is bundled, so a compatible motherboard or external controller is required to adjust the LEDs.

Highlights

  • ARGB lighting on both sides with 20 LEDs
  • Nine silence-optimized blades deliver high pressure at 2.3mm/H2O
  • 0 dBA at 2200 RPM for quiet performance
  • Rifle bearing rated for 60000 hours
  • PWM control via 4-pin motherboard connector

Specifications

Brandbe quiet!
SeriesLight Wings
Model140mm PWM High Speed
Fan Counts1 Fan
Fan ControllerNo Controller
TypeCase Fan
CompatibilityCase
Fan Size140mm
Fan Thickness25mm
Bearing TypeRifle
RPM2200 RPM
Air Flow70-75 CFM
Noise Level31.0 dBA at max RPM
Power Connector4 Pin
ColorBlack
LEDARGB

Other versions of this model

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Questions about this item

How do I connect the 4-pin PWM and ARGB cables to my motherboard for the Light Wings 140mm fan?

Mount the 140mm fan using the four screw holes, plug the 4-pin PWM connector into a motherboard fan header for speed control up to 2200 RPM, and connect the separate 3-pin 5V ARGB cable to a compatible motherboard header or controller to drive the 20 LEDs; the common mistake is forgetting the ARGB cable, leaving lighting inactive.

What maintenance will the rifle-bearing fan need during its 60000-hour rated life?

The sealed rifle bearing requires no lubrication; only occasional dust removal from the nine silence-optimised blades and frame with compressed air or a soft brush is needed to maintain the 70-75 CFM airflow and 31.0 dBA noise level.

At what point does the 2.3 mm H₂O static pressure limit cooling on a dense radiator under sustained load?

The fan delivers a maximum of 2.3 mm H₂O static pressure at 2200 RPM; on thick or high-fin-density radiators this pressure ceiling is reached first, capping airflow before the 31.0 dBA noise limit becomes the constraint.

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