AOpen I975XA-YDG Manual page 66

Frequency/Voltage Control > DRAM Voltage Seting
Frequency/Voltage Control > NB Voltage Seting
This item allows user to adjust North Bridge voltage, BIOS will determine the
adjustable value according to the North Bridge default.
Available options: Auto, 1.525V, 1.575V, 1.625V, 1.675V
Frequency/Voltage Control > Spread Spectrum
This item is used to set the value of clock Spread Spectrum. BIOS will determine
the adjustable value according to the CPU installed, not all items will be showed.
Available options: Pisable, -0.5%, -1.0%,+-0.25%, +-0.5%
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