Currently I am using PNY Optima 4GB 240-Pin DDR3 SDRAM DDR3 1333 and a Barracuda 7200.12 SATA 3Gb/s 500GB Hard Drive.
There's technically nothing wrong with either of them, but which one would be better to upgrade, and to what? let's say price range of $150, possibly up to $200
This upgrade is for games in general, ultra settings. Games like, skyrim, league of legends, WoW, GW2 when it comes, Diablo 3
Thanks in advance
EDIT:
GIGABYTE GA-770T-USB3 AM3 AMD 770 USB 3.0 ATX AMD Motherboard
XFX HD-577X-ZNFC Radeon HD 5770 1GB 128-bit DDR5
CORSAIR Enthusiast Series CMPSU-650TX 650W
AMD Phenom II X4 955 Black Edition Deneb 3.2GHz Socket AM3 125W