GIGABYTE GA-8I945PLGE-RH - Manual (Page 45)

BIOS Setup - 45 -
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PCI-E OverVoltage Control
Normal Set PCI-E OverVoltrage Control to Normal. (Default value)
+0.1V Set PCI-E OverVoltrage Control to +0.1V.
+0.2V Set PCI-E OverVoltrage Control to +0.2V.
+0.3V Set PCI-E OverVoltrage Control to +0.3V.
Incorrect using it may cause your system broken. For power End-User use only!
FSB OverVoltage Control
Normal Set FSB OverVoltage Control to Normal. (Default value)
+0.1V Set FSB OverVoltage Control to +0.1V.
+0.2V Set FSB OverVoltage Control to +0.2V.
+0.3V Set FSB OverVoltage Control to +0.3V.
CPU Voltage Control
Supports adjustable CPU Vcore from 0.8375V to 1.6000V. (Default value: Normal)
Normal CPU Vcore
Display your CPU Vcore Voltage.