Asus F1A55-M LE R2.0 - Manual (Page 64)

2-18 Chapter 2: BIOS setup
Be cautious when changing the settings of the Advanced menu items. Incorrect field values
can cause the system to malfunction.
2.5 Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
2.5.1 CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
The items shown in submenu may be different due to the CPU you installed.
Limit CPUID Maximum [Disabled]
[Enabled] Allows legacy operating systems to boot even without support for CPUs
with extended CPUID functions.
[Disabled] Disables this function.
C6 Mode [Auto]
Enables or disables C6 mode. Configuration options: [Auto] [Enabled] [Disabled]
CPB Mode [Auto]
Disables the CPB (Core Performance Boost) mode or set it to [Auto] for automatic
configuration. Configuration options: [Disabled] [Auto]