SLI enabled or not?

[RasMus]

I have a GeForce 9800Gx2 and a cheap GeForce card installed. Should I have sli enabled, if I only want to use 9800Gx2 card in the game?

If SLI is enabled, the computer will try to get the cards to work in this case? I have the cheap card for an extra screen.

[Marthaz]

No you must have two identical cards, + "SLI" bridge to run SLI.

[RasMus]

Can probably be why I get blue screen with the newer drivers. Now run by 180.84 and then there is no difference if sli is enabled or not