Even if this is true - which I doubt, it is probably not the standard HD6760.
Whatever AMD GPU the wii u uses, it would most likely be modified or updated similar to the way the original R520 was modified to become the Xenos on the X360.
AMD or ATI also updated the Gamecube's Flipper GPU to the wii's Hollywood.
So even if it is a 6760, AMD would probably have "doped" it up a bit, as this seems their standard procedure where console GPUs are concerned. Rumours also state as much.







