Bgears
Bgears b-PWM 80mm Black LEDs Gaming PC Cooling Fan (80x80x25mm)
Bottom line: The Bgears b-PWM 80mm Black LEDs Gaming PC Cooling Fan: Up to 78 CFM of airflow from a compact 80x80x25mm frame; main trade-off: top speed of 4000 RPM will be audible; the RPM behind the 37 dB rating isn't stated.
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Pros & Cons
Pros
- ✓ Up to 78 CFM of airflow from a compact 80x80x25mm frame
- ✓ Wide 500-4000 RPM PWM range for a quiet idle and fast ramp-up under load
- ✓ Mini 4-pin connector plugs into motherboard headers for RPM monitoring
- ✓ Dual ball bearing design built for sustained high-speed operation
- ✓ Includes a 3-to-4 pin Molex adapter and 4 mounting screws
Cons
- ✗ Top speed of 4000 RPM will be audible; the RPM behind the 37 dB rating isn't stated
- ✗ On the Molex adapter it loses motherboard PWM speed control and monitoring
- ✗ Fits 80mm mounts only; it can't replace 92mm or 120mm case fans
- ✗ 25mm thickness may not clear tight small-form-factor mounts
Manufacturer description
The Bgears b-PWM 80mm cooling fan is built for PC builds where a small fan has to move a lot of air. Its speed range runs from 500 to 4000 RPM, and at full speed it is rated for up to 78 CFM, a high figure for an 80x80x25mm frame. Bgears designed its nine translucent black blades for airflow and rates the noise level at 37 dB. The fan uses PWM control through a mini 4-pin, 4-wire connector. You can plug it straight into a motherboard fan header, and the BIOS or your fan software can then adjust its speed and report its RPM. It can idle near 500 RPM while your system is cool and ramp toward…
SpecPicks Verdict
SpecPicks scored Bgears b-PWM 80mm Black LEDs Gaming PC Cooling Fan using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. Bgears's cooling & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for cooling & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
How much airflow does the Bgears b-PWM 80mm fan move?
It is rated for up to 78 CFM at its top speed of 4000 RPM. Because it is a PWM fan, airflow drops as the fan slows toward its 500 RPM minimum.
Can my motherboard control the fan speed?
Yes. It uses a mini 4-pin, 4-wire PWM connector that plugs into a motherboard fan header, so the board can adjust its speed between 500 and 4000 RPM and monitor its RPM.
Can I connect it directly to my power supply?
Yes. A 3-to-4 pin Molex adapter is included for a direct connection to the power supply. Powered this way, the fan doesn't receive a motherboard PWM signal, so you lose speed control and RPM monitoring.
How loud is this fan?
Bgears rates the noise level at 37 dB. The listing doesn't say which speed that figure applies to, so expect more noise as the fan approaches 4000 RPM.
What size is it and what comes in the box?
The fan measures 80x80x25mm and runs on 12VDC. The box includes the fan, a 3-to-4 pin Molex adapter and 4 mounting screws. Check the product listing for current warranty terms.
Key Features
- Speed range from 500 to 4000 RPM with Excellent Airflow of up to 78 CFM
- 9 translucent Black blades design for ultimate airflow and low noise level at only 37 dB
- PWM Technology with mini 4 pin 4 wire connector to connect directly to the Motherboard fan connector for ultimate fan speed monitoring
- 2 ball bearing designed for high speed and high performance
- Include a 3 to 4 pin Molex adapter for direct connection to Power Supply.
Full Specifications
| Brand | Bgears |
|---|---|
| Model | b-PWM 80 Black 2Ball |
| Voltage | 12 Volts (DC) |
| Wattage | 4.8 watts |
| Material | Plastic |
| Dimensions | 80x80x25mm |
| Unit Count | 1 Count |
| Noise Level | 37 Decibels |
| Part Number | b-PWM 80 Black 2Ball |
| Compatibility | PC |
| Material Type | Plastic |
| Cooling Method | Fan |
| Number of Items | 1 |
| Air Flow Capacity | 78 Cubic Feet Per Minute |
| Compatible Devices | Desktop |
| Included Components | Fan and 4 screws |
| Power Connector Type | 4-Pin |
| Warranty Description | 1 year part and labor |
| Maximum Rotational Speed | 4000 RPM |
| Item Dimensions L x W x H | 3.14"L x 0.98"W x 3.14"H |
| Full listing title | Bgears b-PWM 80mm Black LEDs Gaming PC Cooling Fan, High Speed High Performance 2 Ball Bearing PWM Signal, Mini 4 pin Connector, 500-4000 RPM with high Airflow of 78 CFM, 12VDC Fan, 80x80x25mm |
Ready to buy?
Bgears b-PWM 80mm Black LEDs Gaming PC Cooling Fan, High Speed High Performance 2 Ball Bearing PWM Signal, Mini 4 pin Connector, 500-4000 RPM with high Airflow of 78 CFM, 12VDC Fan, 80x80x25mm is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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