User Guide

Introducing the BIOS
User’s Manual
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Warning
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These two options 3:6:2:1 and 4:6:2:1 in CPU FSB/DRAM/AGP/PCI Ratio is for engineering testing
purpose only and considered as non-specification settings. Do not set these two options for normal
operation, your system may not be stable, and may affect system reliability. Also, we do not guarantee
the stability and compatibility for settings that are not within specification, and any damage of any
elements on the motherboard or peripherals is not our responsibility.
Fixed AGP/PCI Frequency:
Two options are available: Disabled ( Enabled. The default setting is Disabled. This item can set the
fixed DRAM/AGP/PCI frequency ratio. You can decide which settings are proper for you.
 Selected AGP Frequency:
You can increase the AGP clock speed here. This means that you can independently increase the AGP
clock speed. The frequencies from 66 MHz to 100 MHz are available and one step is 1 MHz. You can
change this setting to increase AGP clock speed. You can enter the frequency number by numeric key,
and press the <Enter> key to confirm and input the frequency. AGP speed above the standard AGP
bus speed is supported, but not guaranteed due to the AGP specs.
 New FSB/DRAM/AGP/PCI clock:
This item will show you the new FSB/DRAM/AGP/PCI clock frequency that according settings from
the item “Fixed DRAM/AGP/PCI frequency”
Enhance Chipset Mode:
Four options are available: Normal ( Fast ( Fixed in 83MHz ( Fixed in 144 MHz. The default setting
is Fast. This item can set the data transfer speed between the northbridge and southbridge, the faster item
you choose will enchance the chipset transfer rate. When the item “Fixed AGP/PCI Frequency” set to
Enabled, this item will only left two items to select: Fixed in 83MHz and Fixed in 144 MHz.
Normally, we do not recommend that you use the “User Define” option to setup processor speed and PCI
clock. This option is for setup of future processors whose specifications are still unknown. The
specifications of all present processors are included in the default settings. Unless you are very familiar
with all processor parameters, it is very easy to make mistakes when you define the external clock and the
multiplier factor by yourself.
Solution in case of booting problem due to invalid clock setup:
Normally, if the processor clock setup is wrong, you will not be able to boot. In this case, turn the system
off then on again. The processor will automatically use its standard parameters to boot. You can then
enter the BIOS Setup again and set up the processor clock. If you can’t enter the BIOS setup, you must
try turning the system on a few times (3 ~ 4 times) or press “INSERT” key when turning on and the
system will automatically use its standard parameters to boot. You can then enter BIOS SETUP again and
set up the new parameters.
When you change your processor:
This motherboard has been designed in such a way that you can turn the system on after having inserted a
CPU in the socket without having to configure any jumpers or DIP switches. But if you change your CPU,
normally you just have to turn off the power supply (mechanical off), change the CPU and then, set up the
CPU parameters through SOFT MENU
™
III. However, if the new CPU is slower than the old one (and is
same brand and type), we offer you two methods to successfully complete the CPU change operation.