"The new Liberty ECO series from Enermax comes to replace their popular Liberty DXX series, featuring a modular cabling system, 120-mm fan, active PFC and labeled at 40º C – i.e., the manufacturer guarantees that the unit can deliver its labeled power at this temperature. The main problem with the Liberty DXX series was efficiency, which dropped below 80% if you pulled more than 60% the unit's maximum load. Since we had already reviewed Liberty DXX 500 W it will be really interesting to review Liberty ECO 500 W to see how this new version compares to the old version. Is Liberty ECO 500 W a good product or has the same efficiency issue as Liberty DXX 500 W? Can it really deliver 500 W? Check it out"