![]() ![]() The main motherboard cable uses a 20/24-pin connector and this power supply has two ATX12V connectors that together form one EPS12V connector. This translates into less consumption from the power grid (as less power needs to be pulled in order to generate the same amount of power on its outputs), meaning lower electricity bills. The higher the efficiency the better – an 80% efficiency means that 80% of the power pulled from the power grid will be converted in power on the power supply outputs and only 20% will be wasted. Of course we will measure this to see if what the manufacturer claim is true. As for efficiency, Enermax says that this product has 80% efficiency. This power supply has active PFC, which provides a better usage of the power grid and allowing Enermax to sell this product in Europe (read more about PFC on our Power Supply Tutorial). ![]() We like this design as it provides not only a better airflow but the power supply produces less noise, as the fan can rotate at a lower speed in order to produce the same airflow as an 80 mm fan. As you can see, this power supply uses a big 120 mm ball bearing fan on its bottom (the power supply is upside down on Figures 1 and 2) and a big mesh on the rear side where traditionally we have an 80 mm fan. ![]()
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