Asus P5B-Plus VISTA Edition - Manual (Page 92)

4-22 Chapter 4: BIOS setup
Max CPUID Value Limit [Disabled]
Setting this item to [Enabled] allows legacy operating systems to boot even without
support for CPUs with extended CPUID functions.
Configuration options: [Disabled] [Enabled]
Vanderpool Technology [Enabled]
Configuration options: [Enabled] [Disabled]
CPU TM function [Enabled]
Configuration options: [Disabled] [Enabled]
Execute Disable Bit [Enabled]
Allows you to enable or disable the No-Execution Page Protection Technology.
Setting this item to [Disabled] forces the XD feature flag to always return to zero
(0). Configuration options: [Disabled] [Enabled]
PECI [Disabled]
Configuration options: [Disabled] [Enabled]
Intel(R) SpeedStep (tm) Tech. [Disabled]
Configuration options: [Disabled] [Automatic]