"220V Cooling Fan" base is also very important, its method of determining performance: the same environment, do not use the cooling pad, the boot were recorded for five minutes and start one hour after the system is mainly temperature parameters; then use the cooling base, also recorded power for five minutes and start-up system is mainly about an hour after the temperature parameters; comparing four temperature values, you can probably determine the "220V Cooling Fan" base of the cooling performance. Also important to note that the noise and vibration problems cooling base, the quantity and quality of the fan is the deciding factor. Although the increase in multi-fan cooling effect, but the corresponding power consumption and noise and vibration also increased, it is generally 2 to 3 is appropriate. So buy "220V Cooling Fan" base tests need to look at when judging whether or not to accept its noise, vibration will affect whether your computer hard drive.