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Computer Case Fan Cooling Guide

Replacing a cooling fan inside your computer is a quick and easy way to protect or repair your investment. There are many factors to consider from fan size, to bearing type, and even styling choices. But for simplicities sake, there are really only three main things you must know before purchasing a fan.

Fan Size - For starters, Computer Cooling Fans come in many different sizes from 17mm all the way to 140mm. The most simple way to find out what size you need is to measure the distance between the screw holes on the existing fan, or the spot that the fan will be mounted. Also, while most computer fans are 25mm thick, they also can come thicker or slimmer, so it would be good to make a note of the amount of clearance you will have to play with when mounting the fan.

Power Connector - The next thing to note is the type of power connector that your fan will require. Typical power connectors are 2-pin, 3-pin "Motherboard Header", 4-pin PWM, and 4-pin MOLEX, as well as bare wire leads.

Air Flow vs Fan Noise - Air flow vs fan noise is the next thing you must consider. The faster the RPM rating of the fan, the more air it will move, but the louder it will be. While lower RPM fans will be quieter, they will not cool as well. Determining the correct airflow is important as too little airflow may hamper your cooling needs leading to system instability, while too much airflow can sound obnoxious.

Once you know and determine these factors, simply head over to our Fan Selector Page or select one of the fan size categories below to find the perfect fan for your needs!

140mm Cooling Fans
140mm Cooling Fans
120mm Cooling Fans
120mm Cooling Fans
92mm Cooling Fans
92mm Cooling Fans
80mm Cooling Fans
80mm Cooling Fans
70mm Cooling Fans
70mm Cooling Fans
60mm Cooling Fans
60mm Cooling Fans
50mm Cooling Fans
50mm Cooling Fans
45mm Cooling Fans
45mm Cooling Fans
40mm Cooling Fans
40mm Cooling Fans
25mm Cooling Fans
25mm Cooling Fans
17mm Cooling Fans
17mm Cooling Fans
All Cooling Fans
All Cooling Fans