Friend bought a crappy ass best buy computer and now wants to play games on his 1080i big screen. I made him check the PSU and and its a FSP 300 watt. He is either going to need a GTX260 or a 4870. (leaning towards the GTX260) Price is currently an issue but I don't want junk. The system has a 640gb drive and a low end core two duo. what is pretty cheap to get him buy and still not be junk?