(New, 285 watt power supply custom built for this purpose), If you plan on overclocking you will have to deal with higher temperatures that come along with this.. To keep from damaging your mining equipment. One of the easiest ways to do this is to decrease the supply voltage.. This supply has been built to have a safe range, from the factory 19 volts down to 16.5 volts. At 15 amps. As you decrease voltage, the power mosfets run cooler, but the amperage starts to increase. The factory 5.5*2.5 power connectors have there limits, so consideration of this has to be taken. This power supply has an upfront volt meter and power adjustment control. standard c13 computer style input connector. And is vertically mounted for better cooling and a smaller foot print. Other configuration are available from this 285 unit. to 1150w and beyond for powering multiple machines from one central supply. call if you have questions...