Sonata Designer 500 is whisper quiet when it comes to system noise, with the help of sound-deadening panels and a selectable, 3-speed 120mm case fan that provides the option of maximum cooling or minimal noise. Sonata Designer includes a hard drive suspension mounting system that significantly decreases the amount of vibration hard drives transmit to the case. With new High Definition front audio ports, the should you want to hear comes through crystal clear. Its all powered by an upgraded EarthWatts 500 Watt power supply unit (PSU) which is equipped with universal input and Active PFC. This PSU is 80PLUS certified making it one of the most efficient PSU's available. The Sonata Designer is the perfect combination of style, silence and efficiency.