Asus p5nsli question

[Isy]

Newbie question: -

I’m waiting for the Asus p5nsli board to be released before I start my Conroe build. I think this is the perfect board for me (right price, don’t care about overclocking).
This board has two pci-e slots that share 16X lanes (i.e. 8X each) or the board can run 16X on one slot.
My question is:- Does the sli performance deteriorate when using two 8X pci-e lanes rather than two 16X pci-e lanes. E.g. do both cards run at a lower setting?

Also, how would a single nvidia 7950GX2 run on this board (i.e. does it run at full speed or does the performance deteriorate because the board has two pci-e slots that share 16X lanes)?

[Isy]

Can anyone help with this?

[Russ]

ALL SLI shares the 16x to 8x when running two cards, cant see any reason why it would be a problem having that card. why would you need 2 though?