Features: 1. This CPU heat sink has two heat pipes for better and more powerful heat dissipation. 2. It can enhance the cooling capacity of the duct system. 3. U-shaped heat pipe can quickly transfer heat from the processor, with good heat dissipation performance. 4. The aluminum base is combined with two pure copper heat pipes to efficiently dissipate heat. 5. High efficiency and low power consumption. Specification: Size: about 12.5*12.5*2.5cm/4.92*4.92*0.98in Speed: 2200 ± 10% Noise: 22dBA Voltage: 12V DC Air volume: 48CFM Life: 50,000 hours Fan interface: 3pin Bearing type: hydraulic Lighting: Magic Light Applicable CPU: For LGA 775: Core2DUO Core 2/ Celeronp/ Pentium 4 / Pentium D For LGA 1155/1156/1366: Core i3/i5/i7 For AMD/AM2 AM2+/AM3: Sempron / Athlon 64 / Athlon X2 / Phenom 64 Package List: 1 * CPU Fan 1 * Bracket 4 * Screw