|Personally, I think SLi & Crossfire configurations are a waste of money but if you're gonna do it, at least get some decent cards. Why would you pair up two 9600GSO's at about $75 a pop when you could get a single card for $150 that would perform better than the pair, not to mention use less energy & produce less heat?|
I used to be a big fan of nVidia based boards & to a certain degree, I still am...but generally speaking, boards based on Intel chipsets are the better choice. And unless you get into a Core i7, I don't think DDR3 will offer much of a performance advantage over DDR2.
You may wanna consider a different power supply too. I have no doubt the OCZ is a good one but PSUs with multiple +12v rails have fallen out of favor. If you have you heart set on that one, make sure to put some thought into the way you connect your components so that the load is spread across the four +12v rails.