By default, the option to change power plans is disabled.If you don't see Power Options, type the word power in the Search Control Panel box and then select Choose a power plan. From the list of displayed item under Control Panel, select Power Options, which takes you to Select a power plan page.If the choice is made to change the default power plan, Windows Server 2008 R2 or later provides three power plans to maximize performance and conserve energy: Balanced (recommended), High Performance and Power Saver. Therefore, special care should be taken before setting the power plan to High Performance as this can increase power consumption unnecessarily when the system is underutilized. For example, if the High Performance power plan is selected, Windows places the system in the highest performance state and disables the dynamic scaling of performance in response to varying workload levels. The 3 default power plans exposed by Windows provide varying tradeoffs of performance vs. The different performance states are dynamically managed by Windows in conjunction with hardware and platform firmware to respond to varying workload requirements. Today's modern processors enable scaling of performance and power based on the current activity on the system. In most cases, however, the workload varies throughout the day and thus it's recommended to leave the power plan set to Balanced and evaluate the proper settings within the Balanced power plan for processor power management. Depending on the environment, if the platform is always under a heavy load, then it's a viable solution. However, it will disable dynamic performance scaling on the platform. To work around the performance degradation issue, you can switch to the High Performance power plan. Apply the appropriate CPU updates - For AMD FX, AMD Opteron 4200/4300, AMD Opteron 6200/6300, and AMD Opteron Bulldozer.For Windows Server 2008, reference Option 2.For Windows Server 2008 R2 and Windows Server 2008 R2 Service Pack 1.Apply the appropriate hotfix for your operating system:.Reference the hardware manufacturer for model-specific recommendations. Update System BIOS to a current revision.To address this, it requires both hardware and operating system updates. This issue is tied to interaction between the processors and the operating system not adjusting P-States and turning off Core Parking as needed. By default, Windows Server 2008 R2 or later sets the Balanced (recommended) power plan, which enables energy conservation by scaling the processor performance based on current CPU utilization. This issue may occur if the Power Options settings are set to Balanced.
See More information section for details. However, applications or scripts that intensively use resources (primarily processor and memory) may exhibit the problem. You may not notice performance issues while performing simple operations.
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