The Cooler Master Silencio FP 120 PWM fan is the latest in whisper-quiet cooling performance, encompassing the latest in CM Smart Technology. A Static Pressure fans that will concentrate the flow of air through those tight space. The Silent Driver IC provides a smoother, less torque impulse for an ultra-low noise and minimal vibrations from the beginning to the end. Smart Fan Engine that generates 25% more air pressure. Longevity is no problem for the Silencio fan as it utilizes Cooler Master's latest Loop Dynamic Bearing (LOB) technology the highest dustproof level of IP6X for a long-lasting silent cooling performance fan for computer cases, CPU coolers, and radiators.