You might want to consider goign with gateway's fx series. I have a cheapo 15.4" monitor model and its able to run 4 copies without fps scaling just fine. i know they've got some sli systems which should satisfy.

tigerdirect retails gateway and they're fast on shipping. if i were you id check this out, seems like a good buy: http://www.tigerdirect.com/applicati...11672&CatId=17

Ive had good experiences with my gateway laptops and im pretty mean to my systems. definatly look into these guys though.