HEC gyud...ACbel's are not really up to what's on their labels...notorious kaayo nga ilang label 600w but 550w ra diay...google lang & u will find a lot of info on this.
if u have the budget na then go for Silverstone...no frills...reliable...very good warranty period & available locally...this brand gives u the best value for your money...a value called PEACE OF MIND...