The main job of a computer or electronics fan is to keep the part cool. Chips inside them can get very hot so air flow keeps them at a regular temperature. Sadly, stock fans within electronics sometimes aren’t enough. Especially if there are several components working together, perhaps in an office or entertainment center.
That’s why a good fan and fan filter are a great addition to any setup. Learn more about the various types of fans below. Common Types of Fans Power Supply – Most power supply units or PSU’s are provided with a 90mm or 120mm fan filter and internal fan. However, some suggest that they have two fans, one for intake and one for out-take.