but for most dual SLI and Crossfire is plenty, and will provide more than enough power for the future:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130583
if your not planning on SLI/crossfire you can opt for a cheaper P67 board: (stilll a very good board with USB3 and SATA3)
http://www.newegg.com/Product/Product.aspx?Item=N82E16813135279