Using two PCI-e 16x slots for GPU's

Sep 27, 2013
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Hello fellow pc users,

I have two identical videocards at two PCI-e 16x slots of a P6T Asus motherboard.
One of the two grafic cards is working noticebly slower than the other. What can be the cause of this and are there idears for a solution ?

Thanks for your replies.
Bram Stikkel