"220V AC Cooling Fan" for chassis heat also play a cooling effect, air volume will cause insufficient heat accumulation circulating inside the chassis. Exhaust fan surrounding hinder relatively much less, on the amount of wind is much larger than wind pressure requirements. At the same time, the heat inside the chassis can be more quickly discharged outside of the chassis. In addition, most of the chassis side and a top layer of thermal windows only punch mesh design, it is characterized by the use of wind capacity fan is a good choice. Similarly to cat fan, for example, just from the looks of it, P12 with respect to the previously mentioned S12B is, "220V AC Cooling Fan" more moderate inclination and curvature of the blade, as well as a greater number of blade design, "220V AC Cooling Fan" bigger so that each blade of the area exposed to the air, making the air stream at the same time by more. And by many players favorite NMB-B19 is also a fan in wind known products. Tilt angle blade from the appearance, most wind capacity fan blades have more and more relaxed as the number of features.