Asus RAMPAGE IV EXTREME User Manual page 104

PCH 1.5v Voltage [Auto]
The values range from 1.2000V to 2.3000V with a 0.00625V interval.
PCH Logic Reference (1.1VG) [Auto]
The values range from 0.80642V to 1.60623V with a 0.00661V interval.
PCH DMI Strength [Auto]
Configuration options: [-96] – [-1] [Auto] [+1] – [+96]
PCH DMI Skew [Auto]
Configuration options: [-96] – [-1] [Auto] [+1] – [+96]
PCH USB Skew [Auto]
Configuration options: [-96] – [-1] [Auto] [+1] – [+96]
PCH SATA3 Strength [Auto]
Configuration options: [-96] – [-1] [Auto] [+1] – [+96]
VGA Tweakers' Paradise
VGA1/2 Core Voltage [Auto]
Configuration options: [-96] – [-1] [Auto] [+1] – [+222]
VGA1/2 Memory Voltage [Auto]
Configuration options: [-96] – [-1] [Auto] [+1] – [+96]
VGA1/2 PLL Voltage [Auto]
Configuration options: [-96] – [-1] [Auto] [+1] – [+96]
3-18 Chapter 3: BIOS setup