okay guys, i've scoured google and zotac and cannot find what the heck the difference is between these two cards. anyone able to crack this riddle?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814500059
http://www.newegg.com/Product/Product.aspx?Item=N82E16814500080
http://www.newegg.com/Product/Product.aspx?Item=N82E16814500059
http://www.newegg.com/Product/Product.aspx?Item=N82E16814500080