GTX380 vs 5950 that will be the fight that goes down as GTX285 vs 4850 X2 did most likely. In games that are not CF optimized GTX380/Fermi would win "Since a single 5850 cant destroy a Gtx380/Fermi no matter how bad Nvidia made the card, it has to kill 5850 in game otherwise its a retard" and in games that are CF optimized i expect ATi's 5950 to win.

But the Nvidia card would offer more than just gaming, you get a partial/fake CPU that can in theory do most of the work ARM cpu's can do. Its totally upon the end user to buy which card, i am on the value for money bandwagon how much the GTX380/Fermi costs and how much 5950/5870 costs is important factors for me.