Asus P4-P5G41 - Manual (Page 60)

4-20 Chapter 4: BIOS setup
Ratio CMOS Setting [Auto]
Sets the ratio between CPU Core Clock and the FSB frequency.
Configuration options: [Auto].
C1E Support [Enabled]
Allows you to enable or disable Intel CPU Enhanced Halt (C1E) function, a CPU
power-saving function in system halt state. When enabled, the CPU core frequency
and voltage will be reduced during the system halt state to decrease power
consumption. Configuration options: [Disabled] [Enabled]
Max CPUID Value Limit [Disabled]
Allows you to determine whether to limit CPUID maximum value. Set this item
to [Disabled] for Windows XP operating systems. Set this item to [Enabled] for
legacy operating systems such as Windows NT4.0.
Configuration options: [Disabled] [Enabled]
Intel ® Virtualization Tech [Enabled]
This item is not user-configurable. Virtualization enhanced by Intel ® Virtualization
Technology allows a platform to run multiple operating systems and applications
in independent partitons. With virtualization, one computer system can function as
multiple virtual systems.
CPU TM Function [Enabled]
Enables or disables Intel ® CPU Thermal Monitor (TM) function, a CPU overheating
protection function. When enabled, the CPU core frequency and voltage are
reduced when the CPU overheats. Configuration options: [Disabled] [Enabled]
Execute Disable Bit Capability [Enabled]
Enables or disables Intel ® Execute Disable Bit function. This function enhance
protection of your computer, reducing exposure to viruses and malicious
buffer overflow attacks when working with its supporting software and system.
Configuration options: [Disabled] [Enabled]
If an invalid ratio is set in CMOS then actual and setpoint values may differ.
Key in ratio numbers directly.