be quiet! Pure Power 9 700W 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).

We know this is rated at a 700W unit, but we managed to pull an impressive 901.8W of power before the OPP kicked in a shut us down. That’s a huge gain over the official rating and while I doubt the hardware would be happy to do this 24/7, it’ll chew out spikes in your power draw with relative ease.