First of all it comes with integrated graphics, and since I would like to do some gaming on it, I know that must go. I will be playing on a 1600 x 900 res. monitor and would like to play games at medium - high settings. The specs for the desktop also only mention it having a "PCI Express x16" while I notice most cards on Newegg include 2.0 after that detail. It also only has a 300W PSU, which I am willing to upgrade, although I want to try and keep the cost of the Card+PSU under $200.
Thanks for the help, and sorry for being a complete noob at this stuff