The greater the power, "Small Cooling Fan" more powerful wind, the cooling effect is better. The fan power and fan speed is directly linked, meaning that the higher the fan speed, the more powerful fan. Currently on the market for sale of general computer fan is 12V DC power ranging from 0.XW to 2.XW, then "Small Cooling Fan" power of the size you need, depending on your CPU heat to choose. To remind everyone that, not one-sided emphasis on power, only the CPU itself power to be matched on it, if the power is too large, not only to enhance the cooling effect is not much, but may increase the workload of the computer, and ultimately shorten CPU and "Small Cooling Fan" of life. Therefore, the choice of the size of CPU power, while the amount should be "hot" line.