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P55a-UD3 PCI-E Slot question

  • Motherboards
  • SLI
  • PCI Express
Last response: in Motherboards
October 30, 2010 11:13:43 AM

Thinking of crossfiring 2 x 6850's, since I've learnt that a x4 2.0 PCI-E SLI/Xfire is of hardly any noticeable disadvantage.

I just want to clarify something since the manual isn't clear.

On my P55a-UD3 there are 2 PCI-E slots.

x16 (2.0)

and a

x4 (???)

Can someone tell me whether or not the x4 slot conforms to 2.0 standard?


If it doesn't I will probably reconsider xfiring.

More about : p55a ud3 pci slot question

a b V Motherboard
October 30, 2010 11:43:27 AM

I'm pretty sure it's only PCI-E 1.1, and the second PCI-E x16 slot will be disabled, while the first one will run at x8 if you use SATA III or USB 3.0 I believe.