The PSU is actually a 550W Antec Neo HE. It's roughly 4-5 years old. Here is a link: http://www.newegg.com/Product/Produc...82E16817103941
Gaming is the primary purpose, I play WoW, Diablo 3, World of Tanks, Borderlands 2, Bioshock Infinite, Skyrim, Dragon Age, Civilization 5, and a lot of...