Nobody can verify, because it's most likely a vanilla 6800 and not a 6800U, but if the guy said so..... if you get the vanilla 6800 you should complain and ask them to give you a 6800U because the guy said you were getting one. Upgrading from a 6800 to an X850XT PE is certainly not worth 300 bucks, and I don't think Dell is stupid and insane enough to do that. However, 300 bucks from a vanilla 6800 to an x850XT PE seems a lot more reasonable.