Well the PSU is very weak, it wont deal with new Graphics card, I myself am using a Zotac gfx card, Consider the GTX 980 if you want 4k and more power, if 4k isn't on your mind, a 4gb GTX 960 is also nice and way cheaper, for your consideration, and the PSU part is very important, i burned my old one (550 watts) with the new parts and my GPU takes 220watts underload (GTX 770)