Computer Hardware User Manual
Chapter 4: AMI BIOS
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Simultaneous Multi-Threading (Available when supported by the CPU)
Set to Enabled to use the Hyper-Threading Technology, which will result in increased
CPU performance. The options are Disabled and Enabled.
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, 2, 3 and 4.
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 Disabled and Enabled.
Intel® Turbo Boost Technology (Available if Intel® EIST technology is
Enabled)
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.
Intel® C-STATE Tech
If enabled, C-State is set by the system automatically to either C2, C3 or C4 state.
The options are Default and Enabled.
C-State package limit setting
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 enabled, the CPU will conditionally demote C3, C6 or C7 requests to C1 based
on un-core auto-demote information. The options are Disabled and Enabled.
C3 Auto Demotion
When 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.