Alright AMD, we still haven't forgiven you for burying the glorious name 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 th