Chilltec Cpu Cooler Intel Socket 775, AMD Socket AM2 / 754 / 939 / 940 Type Thermoelectric Chip - 40 x 40 / 12V DC Total Power Dissipation - 0% Load 5 W, 50% Load 28 W & 100% Load 50 W Heatsink Material - 4 Heat Pipes, Aluminum Fins, Copper Base Fan Voltage Rating - 12V DC