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Noob question regarding Gigabyte GA-Z68XP-UD3 running SLI/Crossfire

So I'm looking to buy a new computer, and have been checking out the aforementioned mobo (http://www.gigabyte.us/products/product-page.aspx?pid=3892#ov). I want to have the capacity to run in SLI/crossfire further down the track, which is supported. However, I've been reading that when using two GPUs the 2 x16 PCIe slots will drop from x16 speeds down to x8. Is this something i should be concerned about?

cheers
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  1. Best answer
    Not really there about a 4% difference between x16 and x8 lanes with two cards.

    Toms wrote an article a while back using 2x GTX480 in SLI.

    PCI Express And SLI Scaling: How Many Lanes Do You Need?
  2. All Sandy Bridge motherboards except those using the nVidia NF200 chip to increase the PCIe lanes have this prolblem.
  3. awesome, thanks thats great news :)
  4. Best answer selected by dos45.
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