Power save definitions from
www.energystar.gov/index.cfm


8. What’s the difference between "system standby," "hibernate," "monitor power
management," and "turn off hard disks"?
There are 4 basic types of computer power management, or "sleep" features on
Windows PCs:
* "System standby"
o Drops monitor and computer power use down to 1–3 watts each
o Wakes up in seconds
o Saves $25–75 per PC annually
* "System hibernates"
o Drops monitor and computer power use down to 1–3 watts each
o Wakes up in 20+ seconds
o Saves work in the event of power loss
o Saves $25–75 per PC annually
* "Turn off monitor"
o Drops monitor power use down to 1–3 W
o Wakes in seconds or less
o Saves half as much as system standby or hibernate: about $10–40
* "Turn off hard disks"
o Saves very little energy