Gigabyte GA-X38-DS4 User Manual page 54

Clock Driving & Skew Control
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CPU/PCIEX Clock Driving Control
Allows you to adjust the amplitude of the CPU, North Bridge and PCI Express clock.
Options are: 700mV, 800mV (default), 900mV, 1000mV.
CPU Clock Skew Control
Allows you to set the CPU clock prior to the North Bridge clock.
Options are: Normal (default), 50ps~750ps.
(G)MCH Clock Skew Control
Allows you to set the North Bridge clock prior to the CPU clock.
Options are: Normal (default), 50ps~750ps.
******** System Voltage Optimized
System Voltage Control
Determines whether to manually set the system voltages. Auto lets BIOS automatically set the
system voltages as required. Manual allows all voltage control items below to be configurable.
(Default: Manual)
DDR2 OverVoltage Control
Allows you to set memory voltage.
Normal
+0.05V ~ +1.55V
Note: Increasing memory voltage may result in damage to the memory.
PCI-E OverVoltage Control
Allows you to to set PCIe voltage.
Normal
+0.05V ~ +0.35V
FSB OverVoltage Control
Allows you to set the Front Side Bus voltage.
Normal
+0.05V ~ +0.35V
(G)MCH OverVoltage Control
Allows you to set the North Bridge voltage.
Normal
+0.025V ~ +0.375V Increases North Bridge voltage by 0.025V to 0.375V at 0.025V increment.
MCH Reference Voltage Control
Normal
+10%
-10%
DDR Reference Voltage Control
Normal
+10%
-10%
GA-X38-DS4 Motherboard
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Supplies the memory voltage as required. (Default)
Increases memory voltage by 0.05V to 1.55V at 0.05V increment.
Supplies the PCIe bus voltage as required. (Default)
Increases PCIe bus voltage by 0.05V to 0.35V at 0.05V increment.
Supplies the FSB voltage as required. (Default)
Increases FSB voltage by 0.05V to 0.35V at 0.05V increment.
Supplies the North Bridge voltage as required. (Default)
BIOS automatically sets the MCH reference voltage. (Default)
Increases MCH reference voltage by 10%.
Decreases MCH reference voltage by 10%.
BIOS automatically sets the DDR reference voltage. (Default)
Increases DDR reference voltage by 10%.
Decreases DDR reference voltage by 10%.
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