9/24    What does it mean when you run a card (e.g. a video card) at
        4x or 8x? Thanks.
        \_ It means that the strobe signals used for clocking AD and
           SBA data switch 4 or 8 times per reference clock which
           runs at 66MHz for AGP. Actually, I'm over-simplifying here.
           In AGP 4x and 8x, the strobe signals are paired (sometimes
           differential) so those signals only switch at 2x or 4x
           of the reference clock.