http://www.apple.com/powermac/solutions.html
This has been up for I don't know how long, and I think it's pretty impressive no one ever caught it, but near the bottom of the page you will find...
Nemetschek VectorWorks
The results of our internal Power Mac G5 compatibility and speed tests were very impressive. VectorWorks runs dramatically faster on these new machines. Compared to Apples dual 1.25Mhz Power Mac G4 machine, the Power Mac G5 redraws more than twice as fast, renders three times as fast and performs solids modeling operations over five times faster.
This has been up for I don't know how long, and I think it's pretty impressive no one ever caught it, but near the bottom of the page you will find...
Nemetschek VectorWorks
The results of our internal Power Mac G5 compatibility and speed tests were very impressive. VectorWorks runs dramatically faster on these new machines. Compared to Apples dual 1.25Mhz Power Mac G4 machine, the Power Mac G5 redraws more than twice as fast, renders three times as fast and performs solids modeling operations over five times faster.