BGears b-Blaster 24V 140x38 case fan

High-airflow 140 mm case fan

The BGears b-Blaster 24V 140x38 is a 140 mm case fan built for systems that demand maximum airflow. It suits workstations, servers or heavily overclocked rigs where thermal headroom matters more than silence. The 24 VDC input means it connects to industrial or specialised power sources, not standard motherboard headers. Buyers needing a quiet desktop fan should look elsewhere.

Dual ball-bearing construction

Two ball bearings extend operational life and sustain the high 5200 RPM speed under continuous load. A 38 mm thickness requires a mounting location with deep clearance, such as a full-tower chassis, PSU housing or CPU heatsink shroud. The 3-pin 3-wire PWM lead provides speed reporting and control when paired with a compatible 24 V controller. Four mounting screws are included. The black frame blends into most builds.

308 CFM at 70 dBA

The defining figure is 308 CFM airflow delivered at a measured 70 dBA noise level. This trade-off decides suitability: choose this fan only when raw cooling capacity outweighs acoustic comfort. No lower-speed or quieter variant is described in the data.