Doubt with Asus VI Hero expansion slots?

eletrickapple01

Honorable
Aug 26, 2012
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10,680
Here the motherboard: http://www.newegg.com/Product/Product.aspx?Item=N82E16813131989

Ok, so I will be getting a gtx 780 ti for my build but I'm having big confusion with my expansion slots. It says in the expansion slots specs that it has PCI Express 3.0 x16 2(x16 or at dual x8) ( whatever that is...), PCI Express 2.0 x16 ( whatever that is...) 1, and PCI Express x1 3 ( whatever that is...). So does this mean it will downgrade my gpu performance in any way depending on the slot I place it? Also I have plans in the future to upgrade to a SLI configuration adding another GTX 780 ti. Again, will this downgrade my GPU performance? Does this motherboard have the capability of holding an SlI configuration without outweighing my graphics card in any way because I need to make sure it could hold the sli at FULL potential. Also, for the SLI, what slots will I be placing them in?