I am an Nvidia man, and own a pair of 8800GT's in sli. Would like to upgrade to a newer and more powerful card. For now I will be starting off with a single card, and later on adding a second. Was considering a GTX 275 from EVGA(I'm a big fan of EVGA due to their excellant support). Will a single GTX 275 even with that large amount of memory be more powerful than my pair of 8800gt's in sli? I know some of the ATI cards are really powerful and cheaper, but I have an EVGA sli motherboard and would prefer to stick with future sli upgrades. Ready to order a new card, need assistance. I'm not real big on stats, so I haven't consulted the charts. NEED HELP!!!