IGN: Xbox 720 Will Be Six Times as Powerful as Current Gen

[zarx]

drkohler said:

zarx said:

doubt it 

Why would they use a modified 6670 when a 7970m uses less power and is at least twice as powerful?

Lol. A 6670 (which is a 40nm chip) uses less than a third power than a 7970. A modified 6670 in 32nm wll use less than a fourth the power of a 7970.

not really 45nm to 32nm only offers a ~30% reduction in TDP, 40nm to 32nm would certainly drop the TDP below a 7970 but the performance per watt would still be nowhere close.