Measure "24V DC Cooling Fan" another level of quality is the outward manifestation of the noise size, after all, too much noise will greatly affect our operations mood of the computer. Typically the greater the power, the faster the speed, the greater the noise at this time. Therefore, when we buy a fan, be sure to audition "24V DC Cooling Fan" noise, if too large, then it is best not to buy. Of course, the fan noise is not always a fan quality problems, there may be a fan shaft lubrication is not, or is a fan not being installed correctly. If this is the case, we'd be able to re-locate to the fan, or to "24V DC Cooling Fan" shaft with some lubricant to ensure good lubrication. In addition, the design of the fan itself also determines the size of the noise. Current common fan is divided into two kinds of Ball bearings and ball fan has a better cooling effect and less noise, but the prices are slightly higher.