Nvidia NFORCE 680I - Manual (Page 57)

• C1E Enhanced Halt State
Enabled, this function reduces the CPU power consumption when the CPU is idle. Idle
occurs when the operating system issues a halt instruction.
• Execute Disable Bit
When this function is disabled, it forces the XD feature flag to always return to zero (0).
• Virtualization Technology
When this function is enabled, it allows a VMM to utilize the additional hardware
capabilities provided by Intel Virtualization Technology.
• CPU Core 1
This function allows you to enable or disable CPU Core.
System Voltages
Select System Voltages from the Advanced Chipset Features menu and press Enter to
display the System Voltages menu.
Figure 12. System Voltages Menu
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Configuring the BIOS