Antec tp 550c 550w psu the gold standard of power antecrsquos truepower classic series sets new standards for power supplies truepower classic is one of the first series to comply with the toughest energy standard available erp lot 6 2013 by using a psu that is 80 plusreg gold certified operating up to 92 efficient you can reduce your electricity bill by up to 20 when compared to many other power supplies 2 high current rails and a 99 12v output ratio maximize tp 550crsquos capabilities to