I have a 430w modular power supply i believe corsair and I have an asrock z77 extreme 4 motherboard intel i5 3470 processor , Radeon 7870 gpu GHZ Edition, 4gb of ram and 1tb hard drive and a regular cd drive. I was wondering everything is working but I am concerened some guy at best buy was telling me to make sure you have plenty of power for your components otherwise they could short out or something. Now I am kind of iffy on my 430w psu so is 430w enough or what should i get what is the best one to get. Here is my build if my poor grammar was hard to follow http://pcpartpicker.com/user/sujupwns/saved/352z