Efficiency:
@220V input(N.Z.):
Corsair 650TX: 82% Min, 83.7% full load + 5-year warranty
Antec TP-650: Min not specified, 82% full load + 5-year warranty
@110V input(U.S.):
Corsair 650TX: 81.2% Min, 81% full load + 5-year warranty
Antec TP-650: Min not specified, 82% full load + 5-year warranty