Originally Posted by TomBrooklyn
I understand a 16x board is going to revert to 8x if SATA 3 or USB3 is employed on a P55 Motherboard. How much of a video performance hit is going to occur in that case?
A few percent or more depending on your GPU... which would be wise to provide.
Originally Posted by Wile E
In most cases, it shouldn't go down to 8X, but, for the sake of argument, lets assume it does.
The answer is, it shouldn't make much of a difference with all but the highest end cards.
Some motherboards do for some odd reason, probably not enough bandwidth.