I'm thinking of building a new computer,
 
I've been looking at the 9800GX2, but I think one 9800GTX will be enough. But if I decide to go SLi, with two 9800GTX. Then is that possible? Does an for my needs.  
Is it the same as with the older cards or isn't SLi with 9800GTX supportable yet?  
If yes, then which chipsets should I look at?

Of course you can SLI the 9800GTX...infact you can THREE WAY SLI it.  though i don't recommend the card. Its quite underwhelming. Check the benchmarks.
 
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