I have an old http://www.newegg.com/Product/Product.aspx?Item=N82E16813131616&cm_re=P5G41T-M-_-13-131-616-_-Product motherboard and was wondering if amd's pci-e 2.1 cards will work in the 1.0 slot. I know it is supposed to be backwards compatible ,but I am unsure if they support the 2.1 cards as the manufacturer would have to allow that.