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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.

  • That was scary seeing the AXP PSU blow up...
  • eddieroolz
    I still remember buying my Corsair VX550W for $91CAD just a year and half ago. Amazing how prices have come down for cheap, capable and yet quality PSUs over time.

    Oh, and it was interesting to see a real PSU blow up :D
  • Patrick u sure the antec blows the hot air into the case?
    Looking at the picture and the fan alignment it seems otherwise.
  • jestersage
    I wish the Xigmatek was available here. All we have are expensive 750w and 850w versions.
  • jabbrun
    How come there's no Silverstone strider 400W...
  • bmadd
    Im glad to see that the Antec 380D won. I have bought 5 for family and friends have been solid units to date.
  • youssef 2010
    I don't think the Xigmatek PSU can keep the 650W load reliable or else Xigmatek would've rated it to be 650W
  • dragon5677
    Antec is awesome as always
  • feeddagoat
    Is there no way to measure how stable the power on each rail is? Some PSU's Ive seen are very efficient but their rails drops below recommended power delivery meaning components are starved. Some even fluxuate which can damage components over time. The only other thing I feel is missing is capacitor aging. Is there any way to simulate 2-3 years use? Most PSU's I use in my main machine get handed down to another rig or sold. 2nd hand PSU's could be false economy!

    great video, Ive always wanted to see a PSU explode lol.
  • dEAne
    All these keeps me updated.