I'm in the process to configuring a new computer. Right now I'm kicking around the choices of Video cards. Such as Nvidia 7900GTX or 7950GX2, or an ATI 1900XT or 1900XTX. I want to have a system I can upgrade to a second video card. I've had a Nvidia SLI setup in the past, but I have never dealt with an ATI CrossFire setup. I want to make sure I cross all the T's and dot all the I's. The Power Supply that I plan on getting is the PC Power and Cooling Silcener 750W. My motherboard choice is undecided, but I tend to get ASUS boards.