Zalman CPU Cooler for Intel Socket 1155/1156/775 and AMD Socket FM1/AM3+/AM3/AM2+/AM2/940/939/754 CNPS5X PERFORMA Material: Pure Copper and Aluminum Speed: 1,400 ~ 2,800rpm +/- 10% Noise Level: 20 ~ 32dBA +/- 15% Rated Voltage: 12V