13 dram voltage [auto, 14 cpu pll voltage [auto, 15 pch voltage [auto – Asus P7H55D-M PRO User Manual
Page 76: 16 igpu voltage [auto, 17 load-line calibration [auto, 18 cpu spread spectrum [auto, 19 pcie spread spectrum [auto, Dram voltage -20, Cpu pll voltage -20, Pch voltage -20

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Chapter 3: BIOS setup
Chapter 3
3.5.13
DRAM Voltage [Auto]
Allows you to set the DRAM voltage. The values range from 1.2V to 2.20V with a 0.10V
interval.
According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect the
CPU.
3.5.14
CPU PLL Voltage [Auto]
Allows you to set the CPU PLL voltage. The values range from 1.8V to 2.15V with a 0.05V
interval.
3.5.15
PCH Voltage [Auto]
Allows you to set the Platform Controller Hub voltage. The values range from 1.05V to 1.40V
with a 0.05V interval.
The system may need better cooling system to work stably under high voltage settings.
3.5.16
iGPU Voltage [Auto]
Allows you to set the integrated GPU voltage. The values range from 0.5V to 1.75V with a
0.0125V interval.
3.5.17
Load-Line Calibration [Auto]
[Auto]
Automatic configuration.
[Disabled]
Follow Intel specifications.
[Enabled]
Improve CPU VDroop directly.
3.5.18
CPU Spread Spectrum [Auto]
[Auto]
Automatic configuration.
[Disabled]
Enhances the BCLK overclocking ability.
[Enabled]
Sets to [Enabled] for EMI control.
3.5.19
PCIE Spread Spectrum [Auto]
[Auto]
Automatic configuration.
[Disabled]
Enhances the PCIE overclocking ability.
[Enabled]
Sets to [Enabled] for EMI control.