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The following item appears only when you set the AI Overclocking
item to [Manual].
CPU 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 CPU frequency. You can also type the desired
CPU frequency using the numeric keypad. The values range from 100
to 400. Refer to the table below for the correct Front Side Bus and CPU
External Frequency settings.
FSB/CPU External Frequency Synchronization
Front Side Bus
DRAM Frequency [Auto]
Allows you to set the DDR2 operating frequency.
Configuration options: [Auto] [DDR5-400MHz] [DDR5-533MHz]
[DDR-667MHz]
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
PCI Express Frequency [Auto]
Allows you to set the PCI Express frequency. This item is set to [Auto] by
default. Configuration options: [Auto] [90]...[150]
PCI Clock Synchronization Mode [To PCI Express]
Allows you to synchronize the PCI frequency with the PCI Express or CPU
frequency. Configuration options: [To PCI Express] [Fixed 33.3MHz]
[Fixed 36.3MHz] [Fixed 40.0MHz]
5-20
CPU External Frequency
FSB 1066
FSB 800
FSB 533
266 MHz
200 MHz
133 MHz
Chapter 5: BIOS setup
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