Sub-$75 Mainstream Power Supply Roundup

Xigmatek NRP-PC402: Measurements

Efficiency meets 80 PLUS specifications:

Efficiency under different load profiles:

We have a suspicion that the Xigmatek NRP-PC402 is identical to its larger siblings, the NRP-PC502 and NRP-PC602. We have no other explanation as to why else this 400 W PSU would be able to handle loads of more than 650 W--over 60% above the specified wattage--without even breaking a sweat. It didn't shut down until we turned the load up to 674 W, and even then it easily started up again the next time we turned it on. All other test candidates shut down with overloads of just 15 to 20 percent.

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  • mi1ez
    1) Stop moaning about PSU.s that aren't available in the US.
    2) Where are the actual voltages for each rail? It feels like most of this test is missing!
  • swamprat
    I can't say I've read every page - but are there noise readings anywhere as well as the occasional comment like "it's quiet"?
  • Anonymous
    Small PSU means desktop/media.... and since the conclusion was "they're all pretty similar" then noise is going to be one of the main selection criteria. So... no real help in choosing :(
  • stone-69
    Uhm... just a newbie question :
    Are cheap PSUs really that bad ?
    I mean I've seen a lot of people basically saying that a cheap PSU will make your PC explode (or something along that note), but I've seen very few thorough reviews of cheap PSUs testing ripple, noise and voltage drops.
    Could this be an idea for a future article ?