I'm looking to get new pcie x16 2.0 video card which one will give me better gaming this one http://www.newegg.com/Product/Product.aspx?Item=N82E16814162079 or this one http://www.newegg.com/Product/Product.aspx?Item=N82E16814202113 also im not sure if I can out a 2.1 or 3.0 card into my 2.0 slot