SLI used to be a total PAIN, very very problematic, like my motherboard, Striker Extreme by asus many folks had lots of bother with them due SLI issued on the motherbaord chipset (not the video cards) iirc.
however...it's supposed to be much better now :)

It's no use really with Vue except say if you cna't afford a new video card and have a spare one, and both are decent, or you pick up two decent ones very cheap like oh say 2x8800, or better? :)
not worth the hassle IMHO, otherwise.
also, more video cards = more power used!

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