9PX is the first UPS in its class to provide Unity power factor (VA=W). It delivers 11% more power than any other UPS as well as powering more servers with equivalent VA ratings and lower power factors. Energy Star qualified, the 9PX provides the highest efficiency level to reduce energy and cooling costs. Double conversion topology. The Eaton 9PX constantly monitors power conditions and regulates voltage and frequency. With a versatile Rack/Tower form factor, the 9PX is the most compact solution delivering up to 3000W in only 2U.