Asus RAMPAGE IV BLACK EDITION AC4 RAMPAGE IV BLACK EDITION User's Manual - Page 107

Extreme OV [Disabled] This item is set to [Disabled] by default to protect the CPU from being overheated. Set this item to [Enabled] to choose a higher voltage to overclock, but doing so might decrease CPU life. Configuration options: [Disabled] [Enabled] BCLK Skew [Auto] Reduce the value to improve BCLK margin. Configuration options: [Auto] [-5] - [+3] CPU VCORE Voltage [Manual Mode] [Manual Mode] Allows you to set a fixed CPU voltage. [Offset Mode] Allows you to set the Offset voltage. This item appears only when you set the CPU VCORE Voltage item to [Manual Mode] CPU VCORE Manual Voltage [Auto] This item allows you to set a fixed CPU voltage. The values range from 0.800V to 2.100V with a 0.005V interval. This item appears only when you set the CPU VCORE Voltage item to [Offset Mode]. Offset Mode Sign [+] [+] To offset the voltage by a positive value. [-] To offset the voltage by a negative value. CPU VCORE Offset Voltage [Auto] This item allows you to set the Offset voltage. The values range from 0.005V to 0.635V with a 0.005V interval. VTT CPU Voltage [Auto] Allows you to set the VTT CPU voltage. The values range from 0.8000V to 1.7000V with a 0.00625V interval. Refer to the CPU documentation before setting the CPU voltage. Setting a high voltage may damage the CPU permanently, and setting a low voltage may make the system unstable. 2nd VTTCPU Voltage [Auto] Allows you to set the second VTTCPU voltage. The values range from 0.80642V to 1.70538V with an increment of 0.00661V. Chapter 3 ASUS RAMPAGE IV BLACK EDITION 3-17