The Noctua NF-F12 iPPC 3000 PWM Cooling Fan is a heavy-duty, 120mm fan designed for high-performance cooling in computer systems. With a maximum airflow volume of 110 CFM and a maximum fan speed of 3000 RPM, this fan is capable of efficiently cooling components such as MOSFETs, GPUs, chipsets, and RAM modules. The fan features a hydraulic bearing for low noise and long lifespan, and its brown and black colours and sleek design make it a stylish addition to any computer case. With its 4-pin power connection and 12V voltage support, this Noctua fan offers reliable and effective cooling for a variety of computer setups. Used for 6 months then changed to quieter fans due to fans having some audible buzzing/coil whine at lower RPM. Any questions welcome