This particular mounting slot will hold either a 120mm or 140mm fan. These are normally at the front, top and rear of your case some might have one or two slots in the floor of the case as well. Step 1: Find a spare fan slot on your PC. Keep this orientation in mind and just flip the fan over to change its airflow direction. On one side of the fan, the frame will include several bars extending from the centre – air will flow in from the opposite, ‘open’ side towards the side with the bars. Installing a case fan as either an intake or exhaust is merely a case of having it face a certain direction.
Pc fan airflow direction Pc#
Generally, fans at the front of the case should always be intakes, and fans at the rear should always be exhausts top-mounted fans can usually go either way, but floor-mounted fans are better as intakes because there won’t be much space underneath the PC for the ejected hot air to disperse. You should also think about whether your new fan should act as an intake fan, to draw cool air into the case, or an exhaust, to expel the hot air that would otherwise build up inside the main chamber. Aftermarket fans come with their own mounting screws and use a universal style of cable connector, so you’re not limited to fans from your case manufacturer or anything – it’s mainly the size that matters.
120mm is the most common fan size and just about any case will fit them, but you can also get 140mm fans easily as well. First, make sure your case actually has empty fan slots to fill, and second, only buy fans that will fit them. Before we get into the business of screwdriver-ing in a new fan or two, there are some preflight checks to handle.
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