Asus RAMPAGE IV EXTREME User Manual page 92

Scroll down to display the following items:
Ai Overclock Tuner [Auto]
Allows you to select the CPU overclocking options to achieve the desired CPU internal
frequency. Select any of these preset overclocking configuration options:
[Auto]
[Manual]
The following three items appear only when you set the Ai Overclocking Tuner item to
[Manual].
BCLK Frequency [XXX]
Allows you to adjust the CPU and VGA frequency to enhance the system performance.
Use the <+> and <-> keys to adjust the value. You can also key in the desired value
using the numeric keypad. The values range from 80.0MHz to 300.0MHz.
CPU Strap [Auto]
Configuration options: [Auto] [100MHz] [125MHz] [166MHz] [250MHz]
ClockGen Full Reset [Enabled]
[Enabled]
[Disabled] To skip system shutdown at BCLK frequency adjustment.
Turbo Ratio [Auto]
Allows you to manually adjust the Trubo CPU ratio.
[Auto]
[By ALL Cores (Can Adjust in OS)] All numbers of active cores will be set to one single Turbo
[By Per Core (Cannot Adjust in OS)] All numbers of active cores can be set to an individual
The following item appears only when you set the Turbo Ratio item to any setting except
for [Auto].
3-6
Loads the optimal settings for the system.
Allows you to individually set overclocking parameters.
Enabled for better overclocking.
All Turbo ratio are set by Intel CPU default settings
ratio in OS
Turbo ratio in BIOS.
Chapter 3: BIOS setup