Item Dimensions LxWxH:  6.41 x 5.35 x 4.87 inches Brand:  Be quiet! Power Connector Type:  4-Pin Voltage:  12 Volts Wattage:  125 Cooling Method   :  Fan Compatible Devices        :  Desktop Noise Level:  24.3 dB Material:  Copper Maximum Rotational Speed:  2500 RPM