If you want NVIDIA, there's a GTX 560 for $184.99, see http://www.newegg.com/Product/Product.aspx?Item=N82E16814125383 - I know it's a bit over your budget but if you spend any lower then you're going to have a GTX 550 Ti for like $130 and it won't perform nearly as well as the 6870 or the 560.