OEM Industries 9GV0312J301 40mm CPU cooler 12V .6A 3-wire

Compact 40mm CPU cooler for tight builds

The OEM Industries 9GV0312J301 is a 40mm square air cooler designed for small-form-factor systems and industrial boards where space is limited. It runs on 12V at 0.6A and uses a three-wire power connector for simple motherboard or controller hook-up. The black frame and lack of LEDs keep the unit visually neutral in any chassis.

Steady airflow at constant speed

The ball-bearing fan operates between 2000 and 2499 rpm, delivering 20 to 25 cfm of airflow under sustained load. Acoustic output stays in the 40 to 45 dBA range, so noise remains consistent during long compute sessions. The fixed-speed design avoids the ramp-up delay seen in PWM models, giving immediate cooling response when the CPU hits thermal limits.

Ball-bearing durability and simple mounting

Ball-bearing construction reduces friction wear compared with sleeve alternatives, extending service life in continuous-operation scenarios. The three-wire lead supplies power, ground and a tachometer signal so the system can monitor fan health without extra headers. A 40mm square footprint matches legacy SANYO 3828 mounting patterns, allowing drop-in replacement on existing brackets.