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EIST (Available when Power Technology is set to Custom)
EIST (Enhanced Intel SpeedStep Technology) allows the system to automatically
adjust processor voltage and core frequency to reduce power consumption and
heat dissipation. The options are Disabled (GV3 Disabled), and Enabled (GV3
Enabled). (Note: GV3 is Intel Speedstep support used on older platforms. Please
refer to Intel's website for detailed information.)
Turbo Mode (Available when Power Technology is set to Custom)
Select Enabled to use the Turbo Mode to boost system performance. The options
are Enabled and Disabled.
C1E Support (Available when Power Technology is set to Custom)
Select Enabled to enable Enhanced C1 Power State to boost system perfor-
mance. The options are Enabled and Disabled.
CPU C3 Report (Available when Power Technology is set to Custom)
Select Enabled to allow the BIOS to report the CPU C3 State (ACPI C2) to the
operating system. During the CPU C3 State, the CPU clock generator is turned
off. The options are Enabled and Disabled.
CPU C6 Report (Available when Power Technology is set to Custom)
Select Enabled to allow the BIOS to report the CPU C6 State (ACPI C3) to the
operating system. During the CPU C6 State, the power to all caches is turned
off. The options are Enabled and Disabled.
Package C-State limit (Available when Power Technology is set to Custom)
This feature allows the user to set the limit on the C-State package register. The
options are C0, C2, C6, and No Limit.
Energy Performance Bias
Use this feature to select an appropriate fan setting to achieve maximum system
performance (with maximum cooling) or maximum energy efficiency (with maximum
power saving). The fan speeds are controlled by the firmware management via IPMI
2.0. The options are Performance, Balanced Performance, Balanced Energy, and
Energy Efficient.
Factory Long Duration Power Limit
This item displays the power limit (in watts) set by the manufacturer during which
long duration power is maintained.
Long Duration Power Limit
This item displays the power limit (in watts) set by the user during which long dura-
tion power is maintained. The default setting is 0.
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Chapter 7: AMI BIOS
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