"220V Cooling Fan" key performance reflects the following aspects: speed, fan shape, fan, angle and bearing system. Under normal circumstances, the instructions are marked on the radiator fan speed. Generally radiator cooling effect of 30% depending on the fan speed. But the fan does not speed the higher the better. Correct fan speed according to CPU heat should decide, "220V Cooling Fan" Speed to select different sizes should be differentiated, the basic principle is: the premise generate the same amount of wind, the greater the speed of the fan should be lower, Noise will also small, usually go in 3500 between the rotation speed of 5200 more in line with conventional. The greater the power, "220V Cooling Fan" the stronger the wind, the cooling effect is better. The fan power and fan speed is directly linked, meaning that the higher the rotational speed of the fan, the more powerful fan.