Asus Crosshair V Formula/ThunderBolt - Manual (Page 89)

ROG Crosshair V Formula 3-5
3.3 Extreme Tweaker menu
The Extreme Tweaker menu items allow you to configure overclocking-related
items.
Be cautious when changing the settings of the Extreme Tweaker menu items.
Incorrect field values can cause the system to malfunction.
The configuration options for this section vary depending on the CPU and DIMM
model you installed on the motherboard.
Scroll down to display the following items: