Which means, using the second core aswell....
Have they worked out how to do SMP reliably with AOS's lack of memory protection, then? I thought that was the limiting factor on why there's no multicore support...
Also, I'm not sure I understand the idea that older PPC hardware is inadequate. The 1.67GHz PowerBook G4 I had was at least as responsive as my Eee,* which I use with no trouble as my main daily-driver computer, and the MDD G4 that currently serves as my Mac machine is pretty well ahead of either of them. Even the Pismo PowerBook G3 I got in a trade handles things pretty well in OS9, and serviceably in OSX. I'm sure the same can be said for similarly-clocked non-Mac PPC boards.
* (Disk I/O and raw memory bandwidth were limiting factors, but then my Eee has its own different limitations, so it about evens out in the wash.)