Select this choice to view or change the operating profile (performance andpower utilization). This choice specify a preset operating mode to configurethe server for maximum power savings, maximum efficiency, and maximumperformance.- Choose Operating ModeSelect the operating mode based on your preference. Power savings andperformance are also highly dependent on hardware and software runningon the system. When a present mode is selected, the low-level settings arenot changeable and will be grayed out.- Memory SpeedSelect the desired memory speed. Maximum performance mode maximizesperformance. Balanced mode offers a balance between performance andpower. Minimal power mode maximizes power savings.- Memory Power ManagementSelect this choice to enable or disable power management on memory. Ifyou choose Disabled, it will provide maximum performance but minimumpower savings. If you choose Automatic, it is suitable for most applications.- Proc Performance StatesSelect this choice to enable or disable processor performance states.Enabling processor performance states (Intel Speedstep Technology) savespower by reducing speed and voltage as the microprocessor utilized isreduced.Note: Some operating systems must have the correct power profileselected to take advantage of this feature.- C1 Enhance ModeSelect this choice to enable or disable C1E (C1 Enhanced) state. EnablingC1E (C1 Enhanced) state can save power by halting CPU cores that areidle.Note: An operating system that supports C1E state must be installed totake advantage of this feature. Changing this setting will be effective afterthe next system reboot.- QPI Link FrequencySelect this choice to determine the desired microprocessor QPI linkfrequency. Maximum performance mode maximizes performance. Balancedmode offers a balance between performance and power. Minimal powermaximizes power savings.- Turbo ModeSelect this choice to enable or disable turbo mode. Enabling turbo modecan boost the overall microprocessor performance when all microprocessorcores are not fully utilized. A microprocessor core can run above its ratedfrequency for a short period of time when it is in turbo mode.- CPU C-StatesSelect this choice to enable or disable ACPI C2 Processor Power states. Itwill be effective after the next system reboot.- Package ACPI CState LimitSelect this choice to determine the level of C-state. Selecting a higherC-state limit allows the microprocessors to consume less power when theyare idle. If you experience problems with legacy operating systems, set theACPI Cstate limit to C2.Chapter 3. Configuring the server 101
