Power Management Features

Power Management Features

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  Improved boot and resume performance. Startup and shutdown delays are reduced in Windows XP, so the computer is ready for use quickly when you wake it up.
  
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  Power efficiency. Features that improve power efficiency, especially for portable computers, include native support for processor performance control technologies, LCD dimming when on battery power, and turning off the mobile computer display panel when the lid is closed.
  
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  Wake-on support. The computer appears to be turned off when not in use, but can still respond to wake-up events, such as a telephone call or a network request.
  
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  A UI for setting power preferences. Power Options in Control Panel provide a UI with which you can set preferences by choosing or creating power schemes, specifying battery usage options, and setting low power alarms. If an uninterruptible power supply (UPS) is present, Power Options can also manage the UPS.
  
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  Power policy ownership for individual devices. All devices designed to use power management features in Windows can participate in power management. When they are not in use, they can request that the operating system put them into a low-power state to conserve power.
  
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  Power management features in applications. Applications designed to use power management features in Windows tell the operating system what not to put into sleep mode. For example, presentation software, which might be displaying a screen but not actively processing, can tell the operating system not to put the monitor into a sleep state.