Thanks for all the replies guys.
First off, I have considered the XTX, bit I have an nForce board, so I'm not too sure how much the board and GPU would like each other.
Oh and the 7800GTX struggles to push 30FPS in Graw at medium settings at 1600X1200. He has to play it at 1280X1024 to get good FPS. At that resolution, their are jaggies everywhere.
I think I should mention that this box that I'll be upgrading is going to be my little brother's box in the next week or so. I'll be moving out and I just wanted him to have a setup that he doesn't need to spend money on anymore to get the performance he wants. He's starting college and I don't want him working so he keeps his head into books. I know what you guys are saying, if you want him to study why give him a great toy. Well, he averages two hours a day at most on the PC, at least this way it's an enjoyable two hours.
If I was confident in my soldering skills I would definately vold mod the 7900GTs, but I'm not and I don't want to risk loosing a couple hundred dollars worth of PC hardware because of my stupidity. But if I was able to actually vold mod it, man, that would be a great setup.
It's really a choice between a 7900GT SLi setup and the 7950GX2. One good thing about the the GX2 setup is that there is a chance I can upgrade to SLi if nVidia decides on allowing it.
I'll be building my own Rig built around the Conroe and the Asus P5W DH Deluxe motherboard. I'm undecided on the graphics solution for that build also.
Choosing a graphics card is getting to be a very tedious task. It seems nVidia is almost competing with itself in a way. Nothing wrong with Ati either, Ive just been using nVidia cards in the last few years I'm just more comfortable with them. Googling for some more comparisons between the 7900GT SLI and 7950GX2 setup. If anyone has any benchmarks that shows a clear winner, please do post it. Thanks for the input guys