FUD Zilla heard from their sources that the ATI R700 GPU will be a 45nm part:
A 45 nanometre chip is at least 30 percent smaller than 55nm and its more than 50 percent smaller than 65 nanometre chip and at the same time this means that it will be way cooler than any 65 or 55 nanometre chip.
This also means lower heat dissipation and higher clock speeds, but we still don’t know G100 can be the same deal and it can be made of many smaller cores as well. This is how it is possible to put just a bit less than 300 million transistors on a 72 sq mm die
ATI is going to follow an interesting strategy with the R700, according to some of the early rumours the firm is planning to create a GPU that can be used in its whole lineup. A single R700 will be an entry-level chip, two R700 cores will make up a mainstream card while high-end cards will feature four or more R700 cores.