which also sells entire PCs with that name. They are likely made by the same manufacturer as a lot of other generics but Microcenter's reputation is fairly solid. What you'd really need to look for is what kind of power your system needs and does the one you own have enough reserve capacity to maintain operation at peak loads. Maybe if you tell more about your PC. I don't hear of power supplies often destroying PCs. Generally, they just stop working or shut down when the load is excessive. Age is also a factor as wattage can decrease over time. Generally, I choose a PS that is at least 50% above that needed to run a system but that's just my own preference.
I have a 650 watt 80+ bronze power supply made by Powerspec. I havent seen any tests on powerspecs so im wondering if i should buy a new better psu so i dont run the risk of it destroying my pc.