"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 pad, "220V Cooling Fan"is also recorded five minutes to boot and start one hour after the system is mainly temperature parameters; comparing four temperature values, you can probably determine the thermal performance of a cooling base. Also important to note is the problem of noise and vibration of the cooling base, "220V Cooling Fan" in the quantity and quality 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 the base test need to look at when judging whether to accept its noise, vibration will affect whether your computer hard drive.