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Windows 7: PCI-e Lanes

13 Jun 2013   #1
Lady Fitzgerald

Win 7 Ultimate 64 bit
PCI-e Lanes

On my ASUS P9X79 WS, the top PCI-e slot (blue) has x16 assigned to it. It is paired with a black slot below it. If run a GPU card in the top blue slot and nothing in the black slot, the card will run on x16. If I put GPU cards in both the top blue slot and the black one below it, both will run at only x8. What I'm wondering is what would happen if I had a GPU in the blue slot and a x8 card in the black slot? Would the GPU still drop to x8?

My System SpecsSystem Spec
13 Jun 2013   #2

Windows 7 Pro x64 Windows 10 Pro x64

When you have 2 cards they will run at 8x regardless where they are.

I'm assuming you mean another video card, if not, you'll have to clarify.
My System SpecsSystem Spec
13 Jun 2013   #3
Lady Fitzgerald

Win 7 Ultimate 64 bit

My System SpecsSystem Spec


 PCI-e Lanes

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