User guide

ASUS M4A78-E 3-17
Chapter 3
3.5.11 CPU/NB Voltage [Auto]
Allows selection of the processor Voltage. Use the <+> and <-> keys to adjust the value with
a 0.0125V interval.
• The maximum value varies depending on theThe maximum value varies depending on the OV_CPU jumper setting. See 2. CPU
overvoltage setting on page 2-22 for details.
• The supported voltage may vary by CPU models.
3.5.12 CPU VDDA Voltage [Auto]
Allows you to select the CPU VDDA voltage. The values range from 2.50V to 2.80V with a
0.10V interval.
3.5.13 DRAM Voltage [Auto]
Allows you to select the DDR2 reference voltage. The values range from 1.80V to 2.50V with
a 0.02V interval.
3.5.14 HT Voltage [Auto]
Allows you to select the HyperTransport voltage. The values range from 1.20V to 1.50V with
a 0.02V interval.
3.5.15 NB Voltage [Auto]
Allows you to select the Northbridge voltage. The values range from 1.30V to 1.60V with a
0.10V interval.
3.5.16 NB 1.8V Voltage [Auto]
Allows you to select the Northbridge 1.8V voltage. The values range from 1.80V to 2.00V with
a 0.20V interval.
3.5.17 SB Voltage [Auto]
Allows you to select the Southbridge voltage. The values range from 1.20V to 1.35V with a
0.15V interval.
• Setting the above voltages to a high level may damage the CPU, memory module,
and chipset permanently. Proceed with caution.
• The system may require a better cooling system to work stably under high voltage
settings.
3.5.18 CPU Spread Spectrum [Enabled]
[Disabled] Enhances the CPU overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.
3.5.19 PCIE Spread Spectrum [Enabled]
[Disabled] Enhances the PCIE overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.