I`m looking to upgrade my gpu and my psu (if necessary) but anyways i currently have a ASUS M51AC model and it has a GE force gtx 625 graphics card and i would like to upgrade it to a gpu that is under $380 now i do have my eye on a few cards the 660 ti, 680 , and the 770 super clocked 4 GB because currently new egg says that the 2 GB version for the 770 is not in stock but anyways any help on which card to get would be great and maybe also an upgrade to an 800 watt power supply if necessary...also one last thing is the resolution I`d like to play on is 1680X1050 without any frame rate problems for awhile