Well, there we go; the whole "heat" thing Apple has been bragging about turns out to be total BS.
Here is an Intel Mac:
http://www.engadget.com/entry/1234000740046045/
(Note, just one small fan on the chip)
And here is a G5 Mac:
http://www.apple.com/powermac/
(Note the massive coolers on the chips)
The board looks very standard to me...