"Waterproof Cooling Fan" is mainly reflected in the performance of the following aspects: speed, blade shape, blade, angle and bearing system. In general, the instructions are marked on the radiator fan speed. Generally radiator cooling effect of 30% depending on the "Waterproof Cooling Fan" speed. But the fan speed is not as high as possible. Correct fan speed should be decided according to the CPU's heat, fan speed selection of different sizes should be differentiated, the basic principle is this: in the context of generating the same amount of wind, the greater the speed of the fan should be lower, "Waterproof Cooling Fan"Noise will also smaller, usually go in 3500 between the speed of 5200 rpm is more in line with conventional.