Do you know of any performance comparisons that have been done between the
dual G5s and the iMac G5s?
I think they use an imac as a reference but maybe it was a g4 imac that was rated 100 points, then the dual 1.8 g5 was about 192 and the dual 2.5 was 217 or so. You might to check the bus speed on those imacs, and then see about a firewire audio interface - and forget about a powercore or uaudio card.