Also the 3rd release of these cards are coming with 512 mb of vram so thats proabably going to be in a year or so (probably some extra mhz as well on the gpu and ram).
It would be nice if they actaully do incorporate a physics chip into the gpu since that where most of enhancements are going to be for the next few years, this will take the load of the cpu which then better ai can be done.