Chapter 4: BIOS Note: If there is any change to this setting, you will need to power off and restart the system for the change to take effect.) Please refer to Intel’s web site for detailed information. No Execute Mode Memory Protection (Available when supported by the CPU and the OS.) Set to Enabled to enable Execute Disable Bit and allow the processor to classify areas in memory where an application code can execute and where it cannot, and thus preventing a worm or a virus from inserting and creating a flood of codes to overwhelm the processor or damage the system during an attack. Note:
This feature is available when your OS and your CPU support the function of Execute Disable Bit.) The options are Disabled and Enabled . (Note: For more information regarding the hardware/software support for this function, please refer to Intel's and Microsoft's web sites. Intel Speed Step Support (Available when supported by the CPU.) Select Enabled to use the Enhanced Intel SpeedStep Technology and allows the system to automatically adjust the processor voltage and core frequency in an effort to reduce power consumption and heat dissipation. The options are Enabled (-C States, GV1/GV3 are enabled), GV1/GV3 Only (C States: Disabled), C-States Only (-G1/G3:
Disabled), and Disabled (-C States, GV1/GV3 are disabled). Please refer to Intel’s web site for detailed information. Advanced Chipset Control Access the submenu to make changes to the following settings. ! Warning: Be cautious when changing the Advanced settings. An incorrect setting, a very high DRAM frequency or an incorrect DRAM timing may result in system instability. When this occurs, revert to the default setting. Integrated Device Control Sub-menu Memory Reclaiming Select Enable to enable the functionality of Memory Remapping above 4GB. The settings are Enabled and Disabled.
Enable VT-d Select Enable to enable the functionality of the Intel Virtualization Technology for Direct I/O support, which offers fully-protected I/O resource-sharing across the Intel platforms, providing the user with greater reliability, security and availability in networking and data-sharing. The settings are Enabled and Disabled . 4-11