User guide

3-18 Chapter 3: BIOS setup
Chapter 3
3.5.16 PCH Voltage [Auto]
Allows you to set the Platform Controller Hub voltage. The values range from 1.05V to 1.15V
with a 0.10V interval.
• The values of the IMC Voltage, DRAM Voltage, and CPU PLL Voltage items are
labeled in different color, indicating the risk levels of high voltage settings. Refer to the
table on the next page for details.
• The system may need better cooling system to work stably under high voltage
settings.
Blue Yellow Purple Red
IMC Voltage
1.10000V–
1.16875V
1.17500V–
1.22500V
1.23125V–
1.30000V
1.30625V–
1.90000V
DRAM Voltage
1.5000V–
1.5625V
1.5750V–
1.6250V
1.6375V–
1.6875V
1.7000V–
2.5000V
CPU PLL Voltage 1.80V–1.90V 2.00V–2.10V N/A N/A
3.5.17 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.
3.5.18 DRAM CTRL REF Voltage on CHA/B [Auto]
Allows you to set the DRAM Control 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.
3.5.19 Load-Line Calibration [Auto]
[Auto] Automatic conguration.
[Disabled] Follow Intel specications.
[Enabled] Improve CPU VDroop directly.
3.5.20 CPU Spread Spectrum [Auto]
[Auto] Automatic conguration.
[Disabled] Enhances the BCLK overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.
3.5.21 PCIE Spread Spectrum [Auto]
[Auto] Automatic conguration.
[Disabled] Enhances the PCIE overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.