There is this rumor on NeoGaf that the latest dev units for developers came with a 7970 AMD card. Most people speculated why MS would send dev units with a 3 + Tflop card when the next Xbox is rumored to have a 1.2 TFlop GPU. With a 500 Dollar price tag rumored for the next Xbox, could it be that MS GPU might have a little more omph then current rumors have it speced if the nextbox retail at that price.