Asus P5SD2-A - Manual (Page 70)

2-22 Chapter 2: BIOS setup
CPU ratio adjustment [Auto]
Selects the CPU ratio adjustment mode. Configuration options: [Auto] [Manual]
The following items appear only when the CPU ratio adjustment item is set to
[manual].
Ratio CMOS Setting [14]
Sets the ratio between the CPU core clock and the Front Side Bus frequency.
The BIOS auto detects the defaut value of this item. Use the <+> or <-> keys
to adjust the values. Configuration options:[6]...[14]
You can only adjust the CPU ratio adjustment if you installed an unlocked
CPU. Refer to the CPU documentation for details.
C1E Support [Enabled]
Allows you to enable or disable Inter CPU Enhanced Halt (C1E) function, a CPU power-
saving function in system halt state. When enable, 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
[Enabled] for Windows XP operating system; set this item to [Enabled] for legacy
operating system such as Windows NT4.0. (Default: Disabled)
Configuration options: [Disabled] [Enabled]
Vanderpool Technology [Enabled]
Enables or disables Intel ® Virtualization Technology. 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. Configuration options: [Enabled]
[Disabled]
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 [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]