that was ATI, but if your next GPU refresh is as mighty as these numbers indicate, we might at least let you in from the doghouse. A slide detailing two flavors of the upcoming 40nm Barts chip has sprouted up from two independent sources online, and it shows some appreciable gains between generations. The new HD 67x0 cards appear manifestly speedier than their predecessors -- with faster clocks, more texture units, and more ROPs -- but the fun really gets going when you compare them to the HD 5870 and 5850, AMD's previous high-end cards. Memory bandwidth and pixel fillrate are identical between the HD 6750 and 5850, while the HD 6770 even manages to beat the formerly imperious 5870 in a couple of areas. Of course, this is all still unconfirmed information, but considering that Barts is only an "upper midrange" chip that's already stepping on the toes of last year's finest, we feel safe in expecting some pretty big things from the flagship Cayman silicon when it lands -- which will be soon if all these leaks and rumors are anything to go by.