Fans
Fans EFC0912BFSize 90x90x32mm 12V 0.60A 3800RPM 4-wire case fan
A 90 mm square axial fan moves 69.56 CFM at 3800 RPM with a 39.5 dB noise level using a four-wire PWM connector
- 4-wire PWM control enables precise speed regulation
- 56 CFM airflow delivers strong case cooling
- 5 dB noise level keeps operation quiet
- Ball bearing design extends service life
- Flame-retardant PBT frame resists high temperatures
90 mm 4-wire PWM case fan
The Delta EFC0912BF is a 90 × 90 × 32 mm axial fan with a standard four-pin motherboard connector and 20 cm lead. It runs on 12 V DC at 0.60 A and spins at 3800 RPM to deliver 69.56 CFM at 39.5 dB. The frame and blades use glass-fibre-reinforced PBT rated VO for flame retardance.
Replaces worn 90 mm three-pin fans
Swapping a noisy or failed three-wire 90 mm unit for this four-wire model restores automatic PWM speed control and cuts acoustic output to 39.5 dB. The upgrade is worthwhile when the existing fan can no longer maintain target temperatures or when the motherboard header supports PWM but the old fan does not.
Verify 90 mm mount and 4-pin header
Confirm the chassis or heatsink has 90 mm screw spacing and that the board provides a four-pin PWM header; the fan will not report speed or accept duty-cycle commands on a three-pin socket. Ensure the 20 cm cable reaches the header without strain and that the operating range of -10 °C to +70 °C suits the intended environment.
Highlights
- 4-wire PWM control enables precise speed regulation
- 56 CFM airflow delivers strong case cooling
- 5 dB noise level keeps operation quiet
- Ball bearing design extends service life
- Flame-retardant PBT frame resists high temperatures
Specifications
No published specifications for this item yet.
Questions about this item
Will the 90 × 90 × 32 mm frame fit my case's 92 mm fan mounts?
The frame measures 90 × 90 × 32 mm and the supplier also lists 92 × 92 × 32 mm, so it matches standard 92 mm mounting holes.
How do I connect the four-wire PWM plug and what mistake should I avoid?
Plug the 20 cm 4-pin connector into a motherboard PWM header; do not use a 3-pin header or the fan will run at full speed without speed control.
When should I plan to replace the ball bearing in this fan?
The high-precision ball bearing is rated for continuous operation from -10 °C to +70 °C; replace the fan if noise rises above 39.5 dB or airflow drops below 69.56 CFM.
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