Corsair HX1000i Modular Power Supply Review

Over Power Protection and Max Wattage

Power supplies often quote as having various protection mechanisms such and the most important of these is Over Power Protection. In our testing we crank up the power draw until the power supply either shuts down (meaning the OPP mechanism is present and working) or blows up (meaning it is either not present or not working). We then note the maximum power consumption before the power supply shut down (or blew up).

OPP kicked in at 1250W and generally speaking this unit could comfortably operate at 1100-1150W if you wanted to push it further than it’s rated for.