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3.10 Frequency / Voltage Control
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CPU Host / PCI Clock
This function allows you to set the FSB frequency of the CPU and the speed of PCI bus. When
JP14 is set to 100MHz, you can select the system bus and PCI bus frequency from 100/
66MHz to 124/41 MHz. When JP14 is set to 133MHz, you can select the system bus
frequency from 133/33MHz to 160/40MHz.
•
CPU Clock Ratio
This function allows you to set the CPU internal frequency ratio. It determines the CPU internal
frequency according to the following formula:
CPU internal frequency = frequency ratio x system bus frequency.*
* System bus frequency is set in the previous field (CPU Host / PCI Clock).
The choices are: 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, and 8.
NOTE: Because Intel has locked the frequency ratio for new CPUs setting, this field
to adjust the frequency ratio is useless. However, it is effective for old version CPUs.
BIOS SETUP
47
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