I'm running with a silverstone 750 sli psu (http://www.newegg.com/Product/Product.asp?Item=N82E16817256006) with a evga 680i and I plan on purchasing a 8800gtx with a core 2 extreme 6800..will I be able to handle it? Eventually once I have the cash i'll be running two 8800's, and I'm running a 2 pump 12vDDC cooling setup. At the time when I bought this psu the 1000 watts were rare to see..is it neccasary to upgrade? I don't want to Its all sleeved and never used!! RAH!