All actions on the computer are stopped and any open documents and applications are put in memory. You can quickly resume normaloperation within a few seconds. Sleep mode is basically the same thing as “Standby” mode.
Pro: Faster wake-up
Con: Still uses power
The Hibernate mode saves your open documents and running applications to your hard disk and shuts down the computer.
Pro: 0 power consumption
Con: Somewhat slower wake-up
To confusing? Simply do what I do and use the regular shut-down :)