$150 · GPU, Ram, and PSU

GPU - Geforce Gtx 680 afterburner 700 Watt Power Supply -mod x stream Pro -comes with molex and plenty of adaptors and the plug. 2/4 securing screws for case (tiny ones not really important and two should suffice). ddr 3 ram - 3 sticks @ 4gb, 1 pair set. 1 random. Or best offer. Can play a tonne of games.. All you need is a PCI express slot on your motherboard, for a GPU, remember that once you install the GPU you need to plug the monitor into the gpu, not the motherboard/cpu area.