which one of these gpus should i use for gaming.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150447&cm_re=xfx_hd-_-14-150-447-_-Product
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130625
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125333
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130591
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102908
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150447&cm_re=xfx_hd-_-14-150-447-_-Product
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130625
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125333
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130591
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102908