Quote: Originally Posted by Terronium 12
First off you'll need an 'SLI-Ready' motherboard, and with that board comes (if everything is still the same. I haven't picked up a nVidia card since the G70/71 days) the SLI bridge. From there you just connect the two cards via said SLI bridge and you're good to go. I believe you have to enable it through ForceWare afterwards but let someone with experience clarify or deny that latter bit.
Now, a couple of questions of my own:
1. What kind of system are you putting together?
2. Why two 9800GT's? You can get one 550 Ti (1 or 2GB) that will wipe the floor clean with both of them from here to next year, and it'll be cheaper!
3. In addition to question one what kind of PSU are you eying?
Actually, don't worry about what motherboard you get. You can, of course, opt for an SLI-ready motherboard, but since SLI is mostly a software-based thing, there are patches to get around having to use an SLI-ready motherboard.
Though it's rare to find one that isn't, especially a modern one.