How do you see that your PSU isn't good enough?

drumminandstuff93

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Jul 15, 2013
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You need to calculate how much power the components in your system will use (http://www.coolermaster.outervision.com/advance.jsp).

As for the quality of the power supply unit itself, look at reviews by jonnyguru, hardocp, anandtech, or any other good reviewer.