Gigabyte GA-G31-S3G Manual - Page 36

CPU Host Frequency Mhz

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CPU Host Clock Control Enables or disables the control of CPU host clock. Enabled will allow the CPU Host Frequency item below to be configurable. Note: If your system fails to boot after overclocking, please wait for 20 seconds to allow for automated system reboot, or clear the CMOS values to reset the board to default values. (Default: Disabled) CPU Host Frequency (Mhz) Allows you to manually set the CPU host frequency. This item is configurable only if the CPU Host Clock Control option is enabled. The adjustable range is from 100 MHz to 700 MHz. For an 800 MHz FSB CPU, set this item to 200 MHz. For a 1066 MHz FSB CPU, set this item to 266 MHz. For a 1333 MHz FSB CPU, set this item to 333 MHz. Important It is highly recommended that the CPU frequency be set in accordance with the CPU specifications. PCI Express Frequency (Mhz) Allows you to manually set the PCIe clock frequency. The adjustable range is from 90 MHz to 150 MHz. Auto sets the PCIe clock frequency to standard 100 MHz. (Default: Auto) Performance Enhance Allows the system to operate at three different performance levels. Standard Lets the system operate at its basic performance level. Turbo Lets the system operate at its good performance level. (Default) Extreme Lets the system operate at its best performance level. System Memory Multiplier (SPD) Allows you to set the system memory multiplier. Options are dependent on CPU FSB. Auto sets memory multiplier according to memory SPD data. (Default: Auto) Memory Frequency (Mhz) The first memory frequency value is the normal operating frequency of the memory being used; the second is the memory frequency that is automatically adjusted according to the CPU Host Frequency (Mhz) and System Memory Multiplier settings. ******** 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 Supplies the memory voltage as required. (Default) +0.1V ~ +0.7V Increases memory voltage by 0.1V to 0.7V at 0.1V increment. Note: Increasing memory voltage may result in damage to the memory. PCI-E OverVoltage Control Allows you to set PCIe voltage. Normal Supplies the PCIe bus voltage as required. (Default) +0.1V ~ +0.3V Increases PCIe bus voltage by 0.1V to 0.3V at 0.1V increment. GA-G31-S3G Motherboard - 36 -

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GA-G31-S3G Motherboard
- 36 -
CPU Host Clock Control
Enables or disables the control of CPU host clock.
Enabled
will allow the
CPU Host Frequency
item below to be configurable. Note: If your system fails to boot after overclocking, please wait for
20 seconds to allow for automated system reboot, or clear the CMOS values to reset the board to
default values. (Default: Disabled)
CPU Host Frequency (Mhz)
Allows you to manually set the CPU host frequency. This item is configurable only if the
CPU
Host Clock Control
option is enabled. The adjustable range is from 100 MHz to 700 MHz.
For an 800 MHz FSB CPU, set this item to 200 MHz.
For a 1066 MHz FSB CPU, set this item to 266 MHz.
For a 1333 MHz FSB CPU, set this item to 333 MHz.
Important
It is highly recommended that the CPU frequency be set in accordance with the CPU
specifications.
PCI Express Frequency (Mhz)
Allows you to manually set the PCIe clock frequency. The adjustable range is from 90 MHz to
150 MHz.
Auto
sets the PCIe clock frequency to standard 100 MHz. (Default: Auto)
Performance Enhance
Allows the system to operate at three different performance levels.
Standard
Lets the system operate at its basic performance level.
Turbo
Lets the system operate at its good performance level. (Default)
Extreme
Lets the system operate at its best performance level.
System Memory Multiplier (SPD)
Allows you to set the system memory multiplier. Options are dependent on CPU FSB.
Auto
sets
memory multiplier according to memory SPD data. (Default: Auto)
Memory Frequency (Mhz)
The first memory frequency value is the normal operating frequency of the memory being used;
the second is the memory frequency that is automatically adjusted according to the
CPU Host
Frequency (Mhz)
and
System Memory Multiplier
settings.
********
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
Supplies the memory voltage as required. (Default)
+0.1V ~ +0.7V
Increases memory voltage by 0.1V to 0.7V at 0.1V increment.
Note: Increasing memory voltage may result in damage to the memory.
PCI-E OverVoltage Control
Allows you to set PCIe voltage.
Normal
Supplies the PCIe bus voltage as required. (Default)
+0.1V ~ +0.3V
Increases PCIe bus voltage by 0.1V to 0.3V at 0.1V increment.