I've heard this rumored time after time--but is it true? Here's the reason I ask--my 2.0GHz G4 has a geekbench of about 1000 whereas the G5 I'm currently using pulls a little over twice that. You'd think that two systems scale pretty neatly due to the quotient of number of CPUS/clock speed being a little over twice that of the G4, so that makes sense. But good god does the G5 perform faster. It feels like a brand new Mac! How is this possible? Even web browsing is dramatically faster than I expected. 10 tabs and 20 programs running at once? No problem. It may be loud, but it is ferociously fast and hasn't shown so much as a spinning beach ball since I've owned it. How can this only be roughly two times as powerful as my other PowerMac?