Interesting. I just acquired a 780gtx classified 3gb. The communication suggests that this new card is a base version with 6gb. I wonder if there will be a 6gb classified version, or whether the extra 3gb provides more performance than the classified's extra clock speed? Is upgrading from a classified even allowed in program? I chose the classified as it was on sale for basically the price of a regular 780.
The extra clock speed I suspect is always of value, however depending on the game and resolution you are trying to drive, extra gb's may not always be used?