A more unusual benchmark is measuring the power use of the dual G5 2GHz with a 20" Cinema Display attached. The Cinema display pulls ca. 20-25 Watt (it will probably pull more on an all-white screen. Conserve energy, use white on black 
). Please mentally subtract this from the following "in use" numbers. There wasn't much disk I/O happening by the way:
). Please mentally subtract this from the following "in use" numbers. There wasn't much disk I/O happening by the way:
| G5 power off | 2 W |
|---|---|
| G5 sleeping | 10 W |
| G5 CPU use 5% | 200 W |
| G5 CPU use 50% | 220 W |
| G5 CPU use 75% | 330 W |
| G5 CPU use 95% | 350 W |
this compares thusly with my old Cube 450 Mhz (no monitor)
| Cube power off | 7 W |
|---|---|
| Cube sleeping | 9 W |
| Cube on | 35 - 50 W |
Question: If I turn off my computers immediately after use, how long can I run the G5 at top speed (350 W) before using more energy than I would have with the Cube (75W including Cinema Display) in a month with 30 days?