If you do SLI does the 2nd card have to be the EXACT same card (manufacturer, model#, etc.) as the 1st card...or if they're both say 9800GTX (with same clock speed, memory, etc.) will it work?
As long as they are both 9800GTX, manufacture doesnt matter. Same size memory would be better. If the clocks are slower on one it will by default clock both to the slowest one.
