USB 2 of the G5 to be improved.

Barefeats compared the perfomances of the buses Firewire 800, 400 and USB 2 of several different Apple computers.
Contrary to what we were expecting, Powermac G5 is not the fastest.
In writing tests for the Firewire 800, it is outstripped by the Alubook. Worse, the USB 2 of the Powermac is slower than the one of... an eMac, which is the cheapest machine of Apple.
Nothing catastrophic there, far from it, but those tests are quite surprising, and somehow disappointing.