DFI-ITOX G4S300-B User Manual page 90

3
BIOS Setup
3.1.8.4 Clock By Slight Adjust
This field provides several options for selecting the external sys-
tem bus clock of the processor. The available options allow you
to adjust the processor's bus clock by 1MHz increment.
If you selected an option other than the default setting and is
unable to boot up the system, there are 2 methods of booting
up the system and going back to its default setting.
Method 1:
Clear the CMOS data by setting JP3 to 2-3 On. All fields in the
BIOS Setup will automatically be set to their default settings.
Method 2:
Press the <Insert> key and power button simultaneously, then
release the power button first. Keep-on pressing the <Insert>
key until the power-on screen appears. This will allow the system
to boot according to the FSB of the processor. Now press the
<Del> key to enter the main menu of the BIOS. Select "CPU
Frequency Control" and set the "CPU Clock Ratio" or "Clock By
Slight Adjust" field to its default setting or an appropriate fre-
quency ratio or bus clock.
3.1.8.5 CPU Vcore Adjust
This field allows you to manually adjust to a higher core voltage
that is supplied to the CPU. If you wish to use the CPU's default
core voltage, leave this field in its default setting. The CPU's Vcore
will be generated according to the CPU VID configuration.
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Important:
Selecting an external bus clock other than the default setting
may result to the processor's or system's instability and are not
guaranteed to provide better system performance.
Note:
Use a PS/2 or AT (requires a DIN to mini DIN adapter) key-
board for method 2.
Important:
Although this function is supported, we do not recommend that
you use a higher voltage because unstable current may be sup-
plied to the system board causing damage.