Chapter 4: AMI BIOS
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creating multiple "virtual" systems in one physical computer. The options are
Enabled and Disabled.
Note: If there is any change to this setting, you will need to power off and
restart the system for the change to take effect. Please refer to Intel’s
web site for detailed information.
CPU Power Management Conguration
Power Technology
This feature determines what power-saving scheme the motherboard uses. The
options are Disabled, Energy Efcient and Custom. If Custom is selected, the
following options become available:
EIST
EIST (Enhanced Intel SpeedStep Technology) allows the system to automati-
cally adjust processor voltage and core frequency in an effort to reduce
power consumption and heat dissipation. Please refer to Intel’s web site
for detailed information. The options are Disabled and Enabled.
Turbo Mode
This feature allows processor cores to run faster than marked frequency in
specic conditions. The options are Disabled and Enabled.
C1E Support
Select Enabled to use the "Enhanced Halt State" feature. C1E signicantly
reduces the CPU's power consumption by reducing the CPU's clock cycle
and voltage during a "Halt State." The options are Disabled and Enabled.
CPU C3 Report, CPU C6, CPU C7 Report
This BIOS feature enables or disables C3 (ACPI C2), C6 (ACPI C3). C7 (ACPI
C3) reporting to the operating system. The options are Disabled and Enabled.
Package C State Limit
If set to Auto, the AMI BIOS will automatically set the limit on the C-State
package register. The options are C0, C1, C6, and No Limit.
Long duration power limit - this is the processor power consumption limit (in
Watts) during a long duration time window.
Long duration maintained - this is the time in milliseconds where the Long Dura-
tion Power Limit is maintained.
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