FAQ & Section Info
There are some things to consider before you buying a fan. If you notice that your fans are louder than they used to be it probably needs replacement. On the other hand if you don't you're your fans at all, it is probably worn out, and needs replacement too. Lastly if your computer was bought as a set, chances are it has low quality fans, if at all. It is good to replace or install new case fans in this situations.
Fans have their mounting slots. These slots have specific dimensions for which fans can be installed. The information on what type of fans can be installed in your case is usually found on the manual or product guide for your case.
In a typical air-cooling setup, you will have 2 exhaust fans, one at the rear and one at the top; and 2 intake fans on the front. Other configurations are also possible like having one intake fan at the bottom, or 2 exhaust fans at the top.
Many manufacturers offer quality fans and are all good choices. Corsair fans are best-sellers not only due to the company's name and reputation but because their fans really do perform. Most manufacturers also add in little bits of tweaks here and there like adding LED lighting to their fans, optimized for performance or silence, and the sort so those are worth considering. Choosing a fan all comes down to personal preference and on what the fans will be used for.
140 mm case fans are at the larger end of the standard case fan spectrum. Adding a 140mm fan to your computer could seriously improve your air cooling situation - as 140mm fans are capable of moving a staggering amount of air at low speeds (and thus low noise). If your case supports 140 mm case fans you'll definitely want to purchase one and get it going, and OutletPC is here to help with a huge selection of great 140 mm computer cooling fans!