Supermicro X8DTN+, User Manual

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Chapter 4: AMI BIOS
4-7
Active Processor Cores
Set to Enabled to use a processor's Second Core and beyond. (Please refer to
Intel's web site for more information.) The options are All, 1 and 2.
Intel® EIST Technology
EIST (Enhanced Intel SpeedStep Technology) allows the system to automatically
adjust processor voltage and core frequency in an effort to reduce power consump-
tion and heat dissipation. Please refer to Intel’s web site for detailed information.
The options are Disable (Disable GV3) and Enable (Enable GV3) .
Intel® Turbo Boost Technology (Available when Intel® EIST Technology is
enabled)
Select Enabled to use the Turbo Mode to boost system performance. The options
are Enabled and Disabled.
Intel® C-STATE Tech
If enabled, C-State is set by the system automatically to either C2, C3 or C4 state.
The options are Disabled and Enabled .
C3 State
This feature allows the user to decide how the onboard 5500/5600 Series processor
will act at C3 State. The options are Disabled, ACPI 2 and ACPI 3 .
C6 State
This feature allows the user to decide how the onboard 5500/5600 Series processor
will act at C6 State. The options are Disabled and Enabled.
C-State package limit setting (Available when Intel® C-State Tech is
enabled)
If set to Auto, the AMI BIOS will automatically set the limit on the C-State package
register. The options are Auto , C1, C3, C6 and C7.
C1 Auto Demotion
When this feature is enabled, the CPU will conditionally demote C3, C6 or C7 re-
quests to C1 based on un-core auto-demote information. The options are Disabled
and Enabled.
C3 Auto Demotion
When this feature is enabled, the CPU will conditionally demote C6 or C7 requests
to C3 based on un-core auto-demote information. The options are Disabled and
Enabled.