If you need to move more air than you can with an average 80mm fan the Rosewill RFX80 is your solution. Featuring a top speed of 3000RPM this fan pushes up to 38.08CFM. The two ball bearing motor is designed for long life and the exterior mounted speed control makes it easy to adjust. Bearing Type: 2 Ball RPM: 1800-3000 RPM Air Flow: 23.38-38.08 CFM; 1.18-2.18mm H20 Max control by fan controller bracket Noise Level: 19.85-32.31 dBA Max Power Connector: 3 Pin Color: Black with red blades Compatibility: Case Dimensions: 80 x 80 x 25mm