Check the following video of Corsair testing competitor’s power supplies. THIS is the reason I never skimp on a power supply. In the best case, it goes on happily chugging along forever. Usually, it will die a slow death in a few months, leading to you buying another one. And every so often, you get a spectacular explosion that results in the loss of all of your attached computer equipment.
Note, the third explosion is the best… [link]