BIOS Settings Glossary version 13 - By Menu

BIOS Settings Dictionary – By Menu
V13 – November 2009
Power Menu
BIOS Setting Options Description / Purpose
ACPI No
changeable
options
Opens the sub-menu for ACPI (Advanced Configuration and Power
Interface).
For information on ACPI sleep states, refer to
http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface
ACPI Suspend Mode
(or ACPI Suspend
State)
• S1 State
• S3 State
Specifies the ACPI sleep state.
For information on ACPI sleep states, refer to
http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface
After Power Failure • Stay Off
• Last State
• Power On
Determines the mode of operation if a power loss occurs.
Stay Off keeps the power off until the power button is pressed.
Last State restores the previous power state before power loss occurs.
Power On restores power to the computer.
APM • Enabled
• Disabled
Disables or enables APM (Advanced Power Management).
For information on APM, refer to
http://en.wikipedia.org/wiki/Advanced_Power_Management
CPU C State • Enabled
• Disabled
Allows processor to set idle state for power savings. Takes affect only
after reboot.
EIST • Enabled
• Disabled
Speedstep technology: Advanced Power management which includes
Frequency and voltage
For information on EIST, refer to http://en.wikipedia.org/wiki/EIST
Energy Lake • Enabled
• Disabled
Disables or enables Energy Lake power management technology.
Energy Lake technology introduces two main end-user features:
the “Consumer Electronics” (CE)-like device power behavior, and
maintaining system state and data integrity during power loss
events).
Enhanced Intel
SpeedStep®
Technology
• Enabled
• Disabled
Allows processor to dynamically transition speed and voltage states.
For information on SpeedStep, refer to
http://en.wikipedia.org/wiki/Speedstep
Hard Drive • Enabled
• Disabled
Enables power management for hard disks during APM standby mode.