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A square 90mm case fan with 15 translucent blue blades, blue LED lighting, and a 25mm thick black frame

BGears

BGears b-PWM 90 Blue 90mm case fan 500-4000 RPM 88 CFM 39 dBA 2 Ball

SKU CH-K5YG-WRC1B MPN b-PWM 90 Blue

A 90 mm PWM case fan with 15 translucent blue blades, 500 to 4000 RPM speed range, 88 CFM airflow and 39 dBA noise using dual ball bearings

  • Fan Counts1 Fan
  • Fan ControllerNo Controller
  • TypeCase Fan
  • CompatibilityCase
  • Fan Size90mm
  • Fan Thickness25mm
  • Wide speed range from 500 to 4000 RPM for flexible cooling
  • High airflow of 88 CFM moves heat quickly from the case
  • Low 39 dBA noise keeps the system quiet at load
  • Dual ball bearing rated for long life at high speeds
  • 15 translucent blue blades with PWM control and 4-pin connector

Compact 90 mm PWM case fan

The BGears b-PWM 90 Blue is a single 90 mm case fan built for systems that require a slim 25 mm profile. It uses a dual ball bearing rated for high speed operation and a 4 pin PWM connector that also fits 3 pin headers. Fifteen translucent blue blades and matching blue LEDs give a distinctive look while moving air through tight spaces.

Suited for small form factor builds

This fan suits builders working in compact cases or upgrading legacy chassis that only accept 90 mm mounts. The 500 to 4000 RPM range lets the motherboard balance airflow against noise automatically. Buyers who need higher static pressure for dense radiators or heatsinks should consider alternative designs.

88 CFM maximum airflow

At full speed the fan delivers 88 CFM while producing 39 dBA, a level that remains audible in quiet rooms. The 10 percent RPM tolerance means actual peak flow can vary slightly between units. If your thermal target demands more airflow than 88 CFM at 90 mm, this model will not meet it.

Highlights

  • Wide speed range from 500 to 4000 RPM for flexible cooling
  • High airflow of 88 CFM moves heat quickly from the case
  • Low 39 dBA noise keeps the system quiet at load
  • Dual ball bearing rated for long life at high speeds
  • 15 translucent blue blades with PWM control and 4-pin connector

Specifications

BrandBgears
Modelb-PWM 90 Blue
Fan Counts1 Fan
Fan ControllerNo Controller
TypeCase Fan
CompatibilityCase
Fan Size90mm
Fan Thickness25mm
Bearing Type2 Ball
RPM500 to 4000 RPM +/- 10%
Air Flow88 CFM
Noise Level39 dBA
Power Connector3 / 4 Pin
ColorBlue
FeaturesExtreme airflow range for ultimate cooling and control
2 Ball Bearing designed for high speed high performance
Better cooling and silent system performance thru PWM fan speed control
15 aerodynamic design fan blades for better airflow and stability
15 translucent blades
This fan can also be directly connected to a standard mini 3 pin connector on the motherboard or fan controllers
Mini 4 pin connector, 3 to 4 pin Molex adapter and 4 screws included
Dimensions90.00 x 90.00 x 25.00 mm
Shipping weight0.13 kg
Package size206 × 145 × 3 mm

Other versions of this model

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Questions about this item

Does my case have a 90 mm mounting area for this fan?

The fan measures 90.00 x 90.00 x 25.00 mm and includes four screws, so it fits any standard 90 mm case opening.

Will the 4-pin PWM connector work with my older 3-pin motherboard header?

Yes, the fan ships with a 3-to-4-pin Molex adapter and can also plug directly into a standard mini 3-pin header.

How can I confirm the fan is running within its 500 to 4000 RPM range after installation?

Check the RPM reading in BIOS or monitoring software; it should stay between 500 and 4000 RPM with a tolerance of ±10 %.

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