Asus B75M-PLUS User Manual page 42

Scroll down to display the other items.
Target DRAM Speed : xxxxMHz
Displays the current DRAM speed.
2.4.1 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]
[X.M.P.]
2.4.2 CPU bus speed : DRAM speed ratio mode [Auto]
Allows you to set the CPU bus speed to DRAM speed ratio mode.
[Auto]
[100:133]
[100:100]
2-12
Loads the optimal settings for the system.
Allows your system to automatically optimize the CPU ratio, BCLK
frequency, and memory parameters. If you install memory modules
supporting the eXtreme Memory Profile (X.M.P.) Technology, select this
item to set the profiles supported by your memory modules for optimizing
the system performance.
DRAM speed is set to the optimized settings.
The CPU bus speed to DRAM speed ratio is set to 100:133.
The CPU bus speed to DRAM speed ratio is set to 100:100.
Chapter 2: Getting started