Is there any difference between these two boards BESIDES the fact that the UD3P has Crossfire capabilities?
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128358
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128359
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128358
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128359