I was at the Apple Store in KOP, Pa today and I did a comparison between the 1.6G5 with an 867 12PB and a single 1.25 G4. This test was conducted with the machines they had on display. Resolution was set at 1024x768. I used iTunes visualizer to compare the speeds. I set the settings to use OpenGL and "Rougher but faster". Full-screen and Large. 867 G4 12"PB - 63 fps 1.25 G4 PowerMac - 66 fps 1.6 G5 PowerMac - 63 fps oh, I also tested an iBook 900 - 48 fps I know that this wasn't the most scientific test, but it does show me something. I'm wondering if iTunes limits the fps since the G4s and the G5 had almost identical scores. Maybe some others can post their speeds. NOTE - I forgot to check how much RAM was in each Mac, but I'm suspecting that it was whatever the standard configuration was.