Specifications:Hydraulic bearing design, it is silent when working.Suitable for most platforms, such as for Intel 775/1155, for AMD.Type: CPU Cooling FanMaterial: Aluminum Bearing Type: Hydraulic Bearing Service Life: 20000hrs Speed: 2000RMP ± 10 percent Noise: 20DBA ± 10 percent Voltage: DC 12V Air Volume: 45CFM Fits for: for Intel 775/1155, for AMD Features: Hydraulic, Silent, CPU Cooling Size: 100mm x 100mm x 43mm/3.94" x 3.94" x 1.69" (Approx.) Notes: Due to the light and screen setting difference, the itemand 39 s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x CPU Cooling Fan Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin