Review: EVGA 550 B5 PSU (550W)

Low-load Efficiency

We always say that low-load efficiency is arguably more important as most computers spend their time idling in this region. The 550 B5 starts off slow but ups its game as we get closer to 100W. It takes around 72W at the wall to produce 60W for the components. This is where Platinum-rated supplies really shine, but they cost around twice as much as this EVGA.