2-20
Chapter 2: BIOS setup
FSB / CPU External Frequency Synchronization
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 200 to 600. Refer to the table below for
the correct Front Side Bus and CPU External Frequency settings.
Front Side Bus
CPU External Frequency
FSB 1600(overclocking)
400 MHz
FSB 1333
333 MHz
FSB 1066
266 MHz
FSB 800
200 MHz
Overclock Options [Overclock 5%]
Allows you to select the overclock options. Configuration options: [Overclock
5%] [Overclock 10%] [Overclock 15%] [Overclock 20%] [Overclock 30%]
DRAM Frequency [Auto]
Allows you to set the DDR2 operating frequency. Configuration options: [Auto] [667
MHz] [800 MHz] [1067 MHz]
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
The following item appears only when you set the AI Overclocking item to
[Overclock Profile].
FSB
DRAM Frequency
Auto 667MHz 800MHz 960MHz 1000MHz 1067MHz 1110MHz 1200MHz
1600
•
•
•
•
•
1333
•
•
•
•
•
1066
•
•
•
•
800
•
•
•
The DRAM Frequency options vary with different FSB value. Refer to the
following table for the DRAM Frequency options when the FSB value is
1600,1333, 1066, and 800.
