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Square 90mm blue case fan with transparent blades and black frame, four mounting holes, four-pin PWM connector visible

SXDOOL

SXDOOL 90mm 4 Pin PWM Case Fan Blue 40-45 CFM

SKU CH-9SK4-47NNK

90 mm PWM case fan with hydraulic bearing delivers 40-45 CFM at 15-25 dBA

  • Fan size90 mm
  • Bearing design4 Pin PWM Fan
  • Airflow rate40-45 CFM
  • Product typeCase Fan
  • Product colorBlue

Color Blue

  • PWM control adjusts speed automatically between 800 and 1800 RPM
  • Hydraulic bearing runs as quiet as 15 dBA for silent operation
  • Delivers up to 45 CFM airflow to cool compact cases efficiently
  • Fixed blue LED adds a clean accent without extra wiring
  • Rated for 50000 hours of continuous use

90mm PWM Case Fan Blue

The SXDOOL 90mm 4 Pin PWM case fan delivers 40-45 CFM airflow for chassis or radiator cooling. It suits builders who need a 90mm form factor with speed control via motherboard headers. The fixed blue LED adds a subtle accent without software control.

Hydraulic Bearing and Mounting Kit

A hydraulic bearing targets 15-25 dBA noise at 800-1800 RPM while the included four fixing screws simplify installation. The 4-pin PWM interface allows automatic speed adjustment based on system temperatures. No additional accessories or software are bundled.

12V 0.23A Power Draw

The fan draws 0.23A at 12V DC for 1.8W typical consumption. This single electrical figure determines header compatibility and total system power budgeting. Buyers needing higher static pressure or addressable RGB control should look elsewhere.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $28.99
Pricier than about 72% of the 8,339 comparable items (median $19.99).
Fan size 90 mm
Lower than about 70% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Brand nameSnowman
Product typeCase Fan
Product colorBlue
Performance
Airflow rate40-45 CFM
Size & build
Fan size90 mm
Bearing design4 Pin PWM Fan

Other versions of this model

1 more in the same range

Questions about this item

How long will the hydraulic bearing last before it needs replacing?

The bearing is rated for 50000 hours of continuous operation under normal conditions.

What limits the fan's airflow when the system runs hot for hours?

Maximum airflow caps at 45 CFM once the fan reaches its 1800 RPM top speed.

How much noise and power does the fan draw at full speed all day?

At 1800 RPM it produces 25 dBA while drawing 1.8 W from the 12 V rail.

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