Gigabyte GA-7VM400AM User Manual page 53

DRAM Clock (MHz)
M Wrong frequency may make system can't boot. Clear CMOS to overcome wrong frequency issue.
Please set DRAM Clock according to your requirement.
If you use DDR266 DRAM module, please set "DRAM Clock(MHz)" to "133-DDR266". If you use
DDR333 DRAM module, please set "DRAM Clock(MHz)" to "166-DDR333". If you use
Incorrect using it may cause your system broken. For power End-User use only!
By SPD
AGP OverVoltage Control
Normal
+0.1V
+0.2V
+0.3V
DIMM OverVol tage Control
Auto
+0.1V
+0.2V
+0.3V
Auto setting Memory frequency. (Default value)
Set AGP Ov erVoltage Control to Normal. (Default v alue)
Set AGP Ov erVoltage Control to +0.1V.
Set AGP Ov erVoltage Control to +0.2V.
Set AGP Ov erVoltage Control to +0.3V.
Supply voltage as DRAM module reguired. (Default value)
Set DIMM OverVoltage Control to +0.1V.
Set DIMM OverVoltage Control to +0.2V.
Set DIMM OverVoltage Control to +0.3V.
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BIOS Setup