Asus Maximus Formula - Manual (Page 96)

4-24 Chapter 4: BIOS setup
CPU Ratio Control [Auto]
Configuration options: [Auto] [Manual]
The following item appears when the item CPU Ratio Control is set to
[Manual].
Ratio CMOS Setting [7]
Whether this item is configurable depends on your CPU type. The valid value
ranges differently according to your CPU type. If this item is configurable,
enter the value using the numeric keypad.
C1E Support [Enabled]
Allows you to enable or disable C1E Support.
Configuration options: [Enabled] [Disabled]
CPU TM function [Enabled]
Configuration options: [Disabled] [Enabled]
Vanderpool Technology [Enabled]
Configuration options: [Enabled] [Disabled]
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]
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]
Inter(R) SpeedStep (TM) Tech. [Enabled]
The following item appears when the CPU Ratio Control item is set to [Auto].
Configuration options: [Enabled] [Disabled]