dont get the the 750i mobo. i have only heard bad about the 50 series( ie 650,750) my suggestion would be ditch the 260gtx( overpriced and you could get the same performance or better with two 8800gts 512mb cards for about the same price maybe a little more and right now i would not even suggest getting an nvidia card. i would wait till the ati cards come out. they will be a LOT cheaper and should get closed to the same performance. http://www.tomshardware.com/news/Radeon-4850-4870,5667.... ) and save the money. thats good a memory speed.