Discover the Noctua 120mm NF-A12x25 PWM fan, featuring an innovative aerodynamic design for exceptional quiet cooling. With AAO framing, Flow Acceleration Channels, and a tight 0.5mm tip clearance, this versatile fan suits case cooling, heatsinks, and watercooling radiators. The 4-pin PWM version offers automatic speed control, while the included Low-Noise Adaptor reduces max speed to 1700rpm. Enjoy smooth operation and a 6-year warranty.