Select this choice to view or change the operating profile (performance and
power utilization). This choice specify a preset operating mode to configure
the server for maximum power savings, maximum efficiency, and maximum
performance.
- Choose Operating Mode
Select the operating mode based on your preference. Power savings and
performance are also highly dependent on hardware and software running
on the system. When a present mode is selected, the low-level settings are
not changeable and will be grayed out.
- Memory Speed
Select the desired memory speed. Maximum performance mode maximizes
performance. Balanced mode offers a balance between performance and
power. Minimal power mode maximizes power savings.
- Memory Power Management
Select this choice to enable or disable power management on memory. If
you choose Disabled, it will provide maximum performance but minimum
power savings. If you choose Automatic, it is suitable for most applications.
- Proc Performance States
Select this choice to enable or disable processor performance states.
Enabling processor performance states (Intel Speedstep Technology) saves
power by reducing speed and voltage as the microprocessor utilized is
reduced.
Note: Some operating systems must have the correct power profile
selected to take advantage of this feature.
- C1 Enhance Mode
Select this choice to enable or disable C1E (C1 Enhanced) state. Enabling
C1E (C1 Enhanced) state can save power by halting CPU cores that are
idle.
Note: An operating system that supports C1E state must be installed to
take advantage of this feature. Changing this setting will be effective after
the next system reboot.
- QPI Link Frequency
Select this choice to determine the desired microprocessor QPI link
frequency. Maximum performance mode maximizes performance. Balanced
mode offers a balance between performance and power. Minimal power
maximizes power savings.
- Turbo Mode
Select this choice to enable or disable turbo mode. Enabling turbo mode
can boost the overall microprocessor performance when all microprocessor
cores are not fully utilized. A microprocessor core can run above its rated
frequency for a short period of time when it is in turbo mode.
- CPU C-States
Select this choice to enable or disable ACPI C2 Processor Power states. It
will be effective after the next system reboot.
- Package ACPI CState Limit
Select this choice to determine the level of C-state. Selecting a higher
C-state limit allows the microprocessors to consume less power when they
are idle. If you experience problems with legacy operating systems, set the
ACPI Cstate limit to C2.
Chapter 3. Configuring the server 101
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