Asus P7H55-M - IMC Voltage [Auto]; DRAM Voltage [Auto]; CPU PLL Voltage [Auto]; PCH Voltage [Auto]

Chapter 2: BIOS information 2-17
2.4.15 IMC Voltage [Auto]
Allows you to set the CPU Integrated Memory Controller voltage. The values range from
1.10V to 1.45V with a 0.00625V interval.
2.4.16 DRAM Voltage [Auto]
Allows you to set the DRAM voltage. The values range from 1.500V to 2.205V.
According to Intel CPU spec, DIMMs with voltage requirement over 1.65V may damage
the CPU permanently. We recommend you install the DIMMs with the voltage requirement
below 1.65V.
2.4.17 CPU PLL Voltage [Auto]
Allows you to set the CPU PLL voltage. The values range from 1.80V to 1.85V with a 0.05V
interval.
2.4.18 PCH Voltage [Auto]
Allows you to set the Platform Controller Hub voltage. The values range from 1.05000V to
1.40000V with a 0.00625V interval.
The system may need better cooling system to work stably under high voltage settings.
2.4.19 DRAM DATA REF Voltage on CHA/B [Auto]
Allows you to set the DRAM DATA Reference Voltage on Channel A/B. The values
range from 0.395x to 0.630x with a 0.005x interval. Different ratio might enhance DRAM
overclocking ability.
2.4.20 Auto PSI [Enabled]
Enables or disables the Auto PSI mode. Conguration options: [Disabled] [Enabled]
2.4.21 Load-Line Calibration [Auto]
[Auto] Automatic conguration.
[Disabled] Follow Intel specications.
[Enabled] Improve CPU VDroop directly.
2.4.22 PCIE Spread Spectrum [Auto]
[Auto] Automatic conguration.
[Disabled] Enhances the PCIE overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.
2.4.23 PCI/PCIe CLK Status [Enabled]
Allows you to enable or disable clock for PCI/PCI Express ports.
Conguration options: [Disabled] [Enabled]