Case Fans alternatively referred to as a system fan, it is located inside a computer, attached to the front or back of its case. This component help bring cool air into and blow hot air out of the case. They are available in a wide variety of sizes, but 80mm, 92mm, and 120mm (12cm) with a width of 25mm are the most common.

Fans are used to draw cooler air into the case from the outside, expel warm air from inside and move air across a heat sink to cool a particular component. Both axial and sometimes centrifugal (blower/squirrel-cage) fans are used in computers. Computer fans commonly come in standard sizes, such as 120 mm (most common), 140 mm, 240 mm, and even 360 mm. Computer fans are powered and controlled using 3-pin or 4-pin fan connectors.

To properly air cool your computer, you need have enough to push or pull air into and out of the case. More case fans means higher total CFM and more air being moved through your computer.

Just be mindful of the noise levels as fans can generate quite a buzz. To avoid making your computer too loud, use fewer or quieter fans. Also, flashing multi-color lights shouldn’t be the main feature of your case fans.

Air travels one way through a fan, in one side and out the other. By changing the direction a fan is mounted, it can act as either an intake or exhaust. You should also heed the placement of the fans. Air should travel in clear path through. Generally, you want the case fans in front of the drawing in air while the fans at the rear blow air out.

When building your computer, be sure to configure your cooling system with the principles outlined above in mind. Otherwise, you may end up with a toaster oven of a computer.

Cackle Telecommunications is proud to provide case fan to NZ businesses. Choose from a selection of vendors, explore our products to find the right solution for you.