Max CPUI D Val ue Li mi t [ Di sabl ed]

Setting this item to [Enabled] allows legacy operating systems to boot even without support for CPUs with extended CPUID functions. Configuration options: [Disabled] [Enabled]

Execute Di sabl e Functi on [ Di sabl ed]

Allows you to enable or disable the no execution on page protection technology. When enabled, the system forces the XD feature flag to always return to zero. Configuration options: [Disabled] [Enabled]

Only some CPUs support C1E function.

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. Configuration options: [Auto] [Disabled]

When AI Quiet is enabled, this item Enhanced C1 Control is automatically set to [Auto] and becomes non-configurable. See page 4-33.

CPU I nternal Thermal Control [ Auto]

Allows you to disable or set to auto the CPU Internal Thermal Control function. Configuration options: [Auto] [Disabled]

Scroll down the screen to display the following items.

H yper-Threadi ng Technol ogy [Enabl ed]

Allows you to enable or disable the processor Hyper-Threading Technology. Refer to the Appendix for more information on the Hyper-Threading Technology. Configuration options: [Disabled] [Enabled]

The following item appears only when you installed an Intel® Pentium® 4 CPU that supports the Enhanced Intel SpeedStep® Technology (EIST).

I ntel (R) SpeedStep Technol ogy [ Automati c]

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.

Configuration options: [Automatic] [Disabled]

•Refer to the Appendix for details on how to use the EIST feature.

• The motherboard comes with a BIOS file that supports EIST.

• When AI Quiet is enabled, this item is automatically set to [Automatic] and becomes non-configurable. See page 4-33.

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Chapter 4: BIOS setup