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2-22 Chapter 2: BIOS setup
FSB/CPU External Frequency Synchronization
Front Side Bus CPU External Frequency
FSB 1333 333MHz
FSB 1066 266 MHz
FSB 800 200 MHz
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
DRAM Frequency [Auto]
Allows you to set the DDR2 operating frequency.
Conguration options: [Auto] [DDR2-667MHz] [DDR2-800MHz] [DDR2-889MHz]
[DDR2-1067MHz]
Available DRAM frequency options in various FSB settings
* Provided for overclocking purpose only.
FSB Conguration options
Auto DDR2-
667
DDR2-
800
DDR2-
833*
DDR2-
889
DDR2-
1000*
DDR2-
1067*
DDR2-
1111*
DDR2-
1333*
FSB 1333 • • • • • • • •
FSB 1066 • • • • • •
FSB 800 • • •
PCIe Frequency [Auto]
Allows you to set the PCIe operating frequency.
Conguration options: [Auto] [100] [101] [102] [103] [104] ~ [150].
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 FSB frequency using the
numeric keypad. The values range from 200 to 800. Refer to the table below for
the correct Front Side Bus.
The following item appears only when the CPU Ratio Control item is set to
[Manual].
Ratio CMOS Setting [7]
Sets the ratio between CPU Core Clock and the FSB Frequency.