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====== Power Management ======

...otherwise known as Green IT...

See also **[[computing:windows:windows_pwr_mgmt|Windows Power Management]]**

===== Power Management Terms =====

http://en.wikipedia.org/wiki/PowerNow!

http://en.wikipedia.org/wiki/Cool%27n%27Quiet

http://en.wikipedia.org/wiki/SpeedStep

**PowerNow!** - AMD CPU frequency scaling

**Cool'n'Quiet** - AMD CPU frequency scaling for desktop CPUs

**Optimized Power Management** - AMD CPU frequency scaling for newer Opteron CPUs

**SpeedStep** - Intel CPU frequency scaling

**Enhanced Intel SpeedStep (EIST)** - Newer name for SpeedStep

===== General =====

http://www.tomshardware.com/reviews/bios-beginners,1126-8.html

http://workinghardinit.wordpress.com/2011/06/20/consider-cpu-power-optimization-versus-performance-when-virtualizing/

===== Hyper-V =====

http://social.technet.microsoft.com/Forums/en-US/winserverhyperv/thread/6fb8cc70-bc52-4b3e-9aca-94288225a6ba

===== XenServer (XCP) =====

http://blogs.citrix.com/2011/07/11/optimise-your-server-for-maximum-performance/

http://wiki.xen.org/wiki/Xen_power_management

===== VMware =====

http://www.unidesk.com/blog/speedstep-and-vdi-it-good-thing-not-me

http://www.vmware.com/pdf/Perf_Best_Practices_vSphere5.1.pdf

http://virtualkenneth.com/2010/12/06/bios-settings-in-a-vmware-esxivsphere-environment/

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