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Written by Oleksandr Gavenko (AKA gavenkoa), compiled on 2017-01-30 from rev ccaa2f364422+.

Power management

** Global states.

** System states.

** Device states.

** Processor states.

** Performance states.

Use powercfg utility. To se current state:

cmd> powercfg /QUERY

To see all available states:

cmd> powercfg /LIST

To restore power configurtion:

cmd> powercfg /RestoreDefaultPolicies

** Intel Speedstep® Technology.

http://www.intel.com/support/processors/sb/CS-028855.htm
Frequently asked questions for Intel Speedstep® Technology
http://www.intel.com/p/en_US/support/highlights/processors/frequencyid
Intel® Processor Frequency ID Utility
http://software.intel.com/en-us/articles/enhanced-intel-speedstepr-technology-and-demand-based-switching-on-linux
Enhanced Intel SpeedStep® Technology and Demand-Based Switching on Linux