Choose a suitable own "Micro Cooling Fan" is not difficult, using a fan inside the chassis is undoubtedly the two, one is one is the amount of wind pressure. Large wind pressure "Micro Cooling Fan" for CPU and chassis front panel and is equipped with an air filter and a hard disk rack chassis. Winds of fan or rear of the chassis for the top position, so you can rule out the heat, does not cause heat accumulation. For consumers choose the first fan to understand their choice of the chassis is 12cm, 14cm or bigger fan, with the increase in "Micro Cooling Fan" size will bring more significant shock effect. Recommend consumers choose more 12 or 14cm fan more affordable. Both the size of the cooling fan in addition, can also have a good acoustics.