Just rendered a motion menu and it took 1hour 14 mins for 1500 frames. The menu has 4 animated buttons and is 1920x1080. I have a HP Z800 with dual X5660 xeon processors with 48gb ram. The disc is Raid 1E with 15000 rpm sas drives. The CPU usage is 7% and 7gB of memory is being used. Disc thoughput is light.