User Guide

Chapter 4
SR7-8X
4-4
according the type and speed of your processor, or you can choose the User Define, then the following
items will be available to set.
User defined external clock and multiplier factor:
® User Defined:
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Warning
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The wrong settings of the multiplier and external clock in certain circumstances may cause processor
damage. Setting the working frequency higher than the specifications of PCI or processor may cause
abnormal memory module functioning, system hangs, hard disk drive data loss, abnormal functioning
of the VGA card, or abnormal functioning with other add-on cards. Using non-specification settings
for your processor is not the intention of this explanation, for which should be used for engineering
testing only, and not for normal operation.
If you use non-specification settings 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.
 CPU Front Side Bus Frequency:
You can increase the processor clock speed here. This means that you can independently increase the
processor FSB clock speed. The DEC (decimal) numbers from 100 to 200 are available, with the
default setting at 100 or 133 depends on the CPU you used. You can change this setting to increase
processor FSB clock speed. The processor FSB speed above the standard bus speed is supported, but
not guaranteed due to processor specifications.
 CPU Multiplier Factor:
The multiplier factors for this motherboard are: Auto ( 8.0x ( 10.0x ( 11.0x ( …. ( 24.0x.
(These factors vary with the different type and specification of the processor installed)
Note
Some processors may have the multiplier factor locked, so there is no way to choose a higher
multiplier factor. This item will show the “CPU locked” message.
 Estimated new CPU Clock:
This item will show you the frequency that according settings from the item “CPU Front Side Bus
Frequency” and “CPU Multiplier factor”.
CPU FSB/DRAM/AGP/PCI Ratio:
Seven options are available: 3:3:2:1 ( 3:4:2:1 ( 3:5:2:1 ( 3:6:2:1 ( 4:3:2:1 ( 4:4:2:1 ( 4:5:2:1.
The default setting is 3:3:2:1 or 4:3:2:1. This item lets you set the processor Front Side Bus, DRAM,
AGP and PCI clock ratio. It correlates with the processor FSB clock you set. Many of options are
available, you can choose the divider ratio you want. In this case (4:3:2:1), the DRAM clock will be the
processor FSB clock divided by 4 and times 3. AGP clock will be the processor FSB clock divided by 4
and times 2. The PCI clock will be the processor FSB clock divided by 4 and times 1.