Cool Buddy
Wise Old Owl
Hrdwaresecrets.com found that VX450w could supply 571 watts and remain stable. The room was not air conditioned and ambient temperatures were high too. Corsair has labeled it as 450w for the 80+ certification coz the efficiency falls below 80 after 500w. It can be easily trusted to supply 520-530 watts and remain stable. Corsair PSUs are one of the best PSUs out there and mostly under rated. CX400 can also supply more than 450w, just because of efficiency falling below 80, it has been labeled as 400w