As thamlett suggested, an AMD chip on either a Sapphire board (Sapphire being my personal favourite) or gigabyte. Rule of thumb with an AMD is to use an AMD GPU as well. Nvidia seems to be sluggish on AMD systems from personal experience. So its birds of a feather flock together in this regard. Then you inevitably can go the Pentium 4 rout as Stan mentioned, but I don't see the logic in that, it will be for 0 A.D. and will not handle other games should you wish to play them. So AMD... Try to avoid the bulldozer chips, and get a Phenom black edition. The bulldozers tend to lag running various GPUs, although there's probably an explanation for it, there isn't much difference than an Phenom. And why you should get an AMD, is because intel is @#$%, out of most budgets, and quality sucks