Silverstone Nightjar 520W Passive 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).

There’s an extra 160 watts on offer before this unit shuts down, the OPP mechanism works just fine. We wouldn’t expect anything less for a Seasonic based unit!