35% more performance per mm² what a fake
fake because if someone build 5D shader code for an 5870 the old card do have 20% more shader power
and the rest 35-20=15% are only the nvidia tesselation feature 1 triangel per pixel VS 1 triangel per 32 pixel
so the 35% are only true on PURE 100% nvidia code.
on nativ amd code the hd5870 is faster only in 1 single nvidia tesselation feature 1 triangel per pixel the 6870 is 15% faster