I deleted my original post, mostly since it was more of a rant. So here is a better condensed version.
I bought the Dell XPS M1730 and out of the box, Everquest 1 was unplayable with SLI enabled. With SLI disabled and running on one card, it was playable but performance was horrible to the point where I did not want to play. My 4.5 yr old Alienware Area 51m still plays faster, smoother and better. I loaded Half Life 2, since it was a newer more demanding game and received the same results.
In the nVidia control Panel, I disable all the AA settings. I also installed nHancer. On a single card, Everquest 1 and Half Life 2 both perform well as I would expect a machine of this caliper to perform.
Games with SLI enabled are still unplayable in any way. The screen freezes or flickers constantly or the driver crashes. I haven't had time to play with more nVidia control panel settings yet. I would imagine there are optimal settings to make SLI work, or it's a driver problem. I have yet to try to watch a dvd or encode/burn a dvd using Vegas Video.
After reading the boards on slizone.com it would appear that many have problems making SLI work correctly. Further more, it seems I may need to find optimal settings for each and every application/game I use.