If those memory clock speeds are true that is quite interesting. I take 1 of 2 things from this. A) GF100s architecture doesn't require high bandwidth or B) Nvidia epic failed with the memory controller.

Hopefully it is the former. If true, this is the fist time in a while where Nvidias flagship didn't have rediculous memory bandwidth in comparision to ATIs line ( 2900 being the exception with its 512bit bus ) Hell the GTX 280 has more memory bandwidth than the GTX 470 if this info is to be believe but again as I mentioned perhaps this isn't a big issue in light of the architecture changes. Interesting none the less...

As far as core and shader clock, 1400 seems reasonable. Those numbers would put the 480 at roughly 2x the GTX 285... at least on paper (doesn't this sound familiar lol... ; eg 240 - 480 CC, similar clock speeds ect )