There is a new Windows 7 BETA power management whitepaper available. Key points from the whitepaper include:
- Improved idle efficiency - Windows 7 reduces resource utilisation when the system is idle and reduces or eliminates background activity on the system.
- Timer Coalescing - for background activity that cannot be reduced, Windows 7 has been modified to defer then execute non-critical background activity at once. It also defers non-critical background activity when on battery power.
- Trigger start services - when your computer boots it loads a number of system services in the background. In Windows 7 these services will now use 'trigger start' i.e. they require a physical event to occur before the service is started.
- Enhancing power processing management (PPM) - driver support for latest PPM technologies.
- Device power management - added the following low power enhancements:
| Adaptive Display Brightness | dims the display after a period of time |
| Low Power Audio | support for latest Intel HD Audio low power specification |
| Bluetooth | "selective suspend" mode added |
| Networking |
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- User Experience - includes enhancements including improved power troubleshooting and improved low battery alerting.
- Enterprise power management - more granular control integrated, including:
| Event Tracing & power request inspection | integrated into powercfg.exe with HTML based reports |
| Group Policy |
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| New WMI power provider | allows Powershell 2.0 scripting of power data & settings |
| Power Policies | additional power policies built-in |
- Diagnostics in-the-box - the Windows Performance Toolkit helps IT Pros diagnose issues associated with power management.
Also as a side note, there are also two new other documents on the Microsoft Environment site:
- Green Cloud Computing with Microsoft Research
- Data Center Energy Efficiency with Global Foundation Services
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