Wow check this out:

1. Monitoring and Planning: Power Management collects information about computer usage and power settings for computers in the origination. Reports are provided to allow the administrator to analyze this data and determine optimal power management settings for computers.

2. Enforcement: Power management allows the administrator to create power plans which can be applied to collections of computers. These power plans configure Windows power management settings on computers, and different power plans can be configured for peak and non-peak working hours.

3. Compliance: After applying power plans to computers in the organization, the administrator can run reports to validate that power settings were correctly applied and to calculate power and carbon footprint savings across collections of computers.
In addition to power management, ConfigMgr07 R3 will provide customers with enhanced scale and performance support (scale to 300K managed clients per hierarchy, Active Directory delta discovery, dynamic collection updates), as well as enablement of further capabilities for operating system deployment. A full list of the R3 features can be found on Microsoft Connect at the “What’s new in R3” post.

Check it out here!

http://blogs.technet.com/b/schadinio/archive/2010/08/05/sccm-released-configmgr07-r3-release-candidate-rc.aspx !

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Read the complete post at http://wmug.co.uk/blogs/r0b/archive/2010/08/05/yes-configmgr-r3-is-rc.aspx