"24V DC Cooling Fan" There is a fin-shaped heat sink is made by bending a thin aluminum, looks like accordion bellows, the cooling effect of this fin-shaped fins good. More upscale is the vortex deflector fins, these fins are formed by casting, heat the more dense, and are tilted in one direction, in order to help air flow through, "24V DC Cooling Fan" cooling tablets used in the famous fan "turbo fan" and the original CPU. For this indicator, I suggest everyone from fans of the shape, the size of the fan, and the fan blade design forms thickness angles comprehensive examination, usually affect the heat generated by the different shapes of "24V DC Cooling Fan" will not be much but by contrast, the size of the cooling fan for cooling the chip plays a relatively large role.