What happens when the computer goes to sleep (not just into idle mode or display sleep)?
On all computers:
- The microprocessor goes into a low-power mode
- Video output is turned off, and the connected display may turn off as well, or enter its own idle state
- Apple-supplied hard disks spin down
- Third-party hard disks may spin down
On PowerBooks and iBooks:
- The Ethernet port turns off (see Note below)
- Expansion card slots (such as PCMCIA) turn off
- The built-in modem turns off (see Note below)
- An AirPort card, if present, turns off (see Note below)
- The ADB or USB connection only responds to the power key on an external keyboard (see Tip below)
- The optical media drive spins down
- Audio input and output turns off
- Keyboard illumination, if a feature of your portable computer, turns off
As you might guess, a computer uses considerable less power when in sleep mode then when awake. The computer will continue to power RAM in sleep mode, so that whatever was in RAM when the computer went to sleep will still be there when the computer wakes. This also means that computers with more RAM use slightly more power in sleep mode.
I leave my Mac on 24/7. Just have the monitor sleep. It allows Mac OS X to run routine maintenance programs on a daily, weekly, and monthly basis. My Mac is almost five years old. Have being doing this for about a year and a half.Malus said:I know this sounds really dumb, but...if I would put my computer into sleep mode every night, and never turn it off till the weekend, would that damage it in anyway? Or make its lifespan shorter?