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4-18 Chapter 4: BIOS setup
FSB Frequency [XXX]
Displays the frequency sent by the clock generator to the system bus and PCI bus.
The value of this item is auto-detected by the BIOS. Use the <+> and <-> keys to
adjust the FSB frequency. You can also type the desired CPU frequency using the
numeric keypad. The values range from 200 to 800. Refer to the table below for
the correct Front Side Bus and CPU External Frequency settings.
FSB/CPU External Frequency Synchronization
Front Side Bus CPU External Frequency
FSB 1333 333 MHz
FSB 1066 266 MHz
FSB 800 200 MHz
4.4.2 CPU Ratio Control [Auto]
Conguration options: [Auto] [Manual].
Ratio CMOS Setting [9]
This sub-item appears only when you set the CPU Ratio Control item to
[Manual]. Allows you to set the ratio between CPU Core Clock and FSB
Frequency. Use the <+> and <-> keys to adjust the ratio. If an invalid ratio is
set in CMOS, then actual and setpoint values may differ.
4.4.3 FSB Strap to North Bridge [Auto]
When set to [Auto], the FSB Strap will be adjusted automatically by FSB
Frequency and DRAM Frequency.
Congifuration options: [Auto] [200MHz] [266MHz] [333MHz]
The following item appears only when you set the Ai Overclock Tuner item to
The following item appears only when you set the Ai Overclock Tuner item to
PCIE Frequency [Auto]
Allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust
the PCIE frequency. The values range from 100 to 150.