Asus CROSSHAIR IV EXTREME, User Manual, Page: 91 / 172

ROG Crosshair IV Formula 3-15
3.3.18 VDDPCIE Voltage [Auto]
Allows you to set the VDDPCIE voltage. The values range from 1.113000V to
2.000750V with a 0.013250V interval.
The system may need better cooling system to work stably under high voltage
settings.
3.3.19 DRAM CTRL REF Voltage [Auto]
Allows you to set the DRAM Control Reference Voltage The values range from The values range from
0.395x to 0.630x with a 0.005x interval. Different ratio might enhance DRAM Different ratio might enhance DRAM
overclocking ability.
3.3.20 DRAM DATA REF Voltage [Auto]
Allows you to set the DRAM DATA Reference Voltage The values range from The values range from
0.395x to 0.630x with a 0.005x interval. Different ratio might enhance DRAM Different ratio might enhance DRAM
overclocking ability.
3.3.21 CPU Load-Line Calibration [Auto]
Allows you to select the CPU Load-Line mode.
Configuration options: [Auto] [Disabled] [Enabled]
3.3.22 CPU/NB Load-Line Calibration [Auto]
Allows you to select the CPU/NB Load-Line mode.
Configuration options: [Auto] [Disabled] [Enabled]
3.3.23 CPU Spread Spectrum [Auto]
[Auto] Automatic configuration.
[Disabled] Enhances the CPU overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.
3.3.24 PCIE Spread Spectrum [Auto]
[Auto] Automatic configuration.
[Disabled] Enhances the PCIE overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.