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4-24 Chapter 4: BIOS setup
Enhanced C1 Control [Auto]
When set to [Auto], the BIOS automatically checks CPU capability to enable
the C1E support. In C1E mode, the CPU power consumption is lower when
idle. Conguration options: [Auto] [Disabled]
• Refer to the Appendix for details on how to use the EIST feature.
• The motherboard comes with a BIOS le that supports EIST.
• When AI Quiet is enabled, this item is automatically set to
[Automatic] and becomes non‑congurable. See page 4‑33.
Only some CPUs support C1E function.
CPU Internal Thermal Control [Auto]
Allows you to disable or set to auto the CPU Internal Thermal Control
function. Conguration options: [Auto] [Disabled]
Scroll down the screen to display the following items.
Hyper-Threading Technology [Enabled]
Allows you to enable or disable the processor Hyper-Threading Technology.
Refer to the Appendix for more information on the Hyper-Threading
Technology. Conguration options: [Disabled] [Enabled]
When AI Quiet is enabled, this item Enhanced C1 Control is automatically
set to [Auto] and becomes non‑congurable. See page 4‑33.
The following item appears only when you installed an Intel
®
Pentium
®
4
CPU that supports the Enhanced Intel SpeedStep
®
Technology (EIST).
Intel(R) SpeedStep Technology [Automatic]
Allows you to use the Enhanced Intel SpeedStep
®
Technology. When set
to [Automatic], you can adjust the system power settings in the operating
system to use the EIST feature.
Set this item to [Disabled] if you do not want to use the EIST.
Conguration options: [Automatic] [Disabled]
Max CPUID Value Limit [Disabled]
Setting this item to [Enabled] allows legacy operating systems to boot
even without support for CPUs with extended CPUID functions.
Conguration options: [Disabled] [Enabled]
Execute Disable Function [Disabled]
Allows you to enable or disable the no execution on page protection
technology. When enabled, the system forces the XD feature ag to always
return to zero. Conguration options: [Disabled] [Enabled]