The Antec PRO 120mm DBB Case Fan can help protect your whole computer investment by providing superior case cooling action. The cooling helps to increase the longevity of components in the machine. The ball-bearing case fan design runs smoothly and quietly. It does not interfere with your work as it is barely noticeable with an acoustic noise of only 29.8 dBA. This computer case fan runs at a speed of 2000RPMs and creates a volumetric air flow of about 79CFM. It is a handy fan to have for when you notice your computer heating up. You can cool your computer down and keep it from heating up again with this useful case fan. This is a wonderful fan to keep around the home or office.