Asus P5B-MX/WIFI-AP - Manual (Page 69)

ASUS P5B-MX/WiFi-AP 2-19
FSB/CPU External Frequency Synchronization
Front Side Bus CPU External Frequency
FSB 1066 266 MHz
FSB 800 200 MHz
FSB 533 133 MHz
DRAM Frequency [Auto]
Allows you to set the DDR2 operating frequency.
Configuration options: [Auto] [DDR2-533MHz] [DDR2-667MHz]
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
[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 133 to 400. Refer to the table below for
the correct Front Side Bus and CPU External Frequency settings.