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 500. 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 1600

400 MHz

FSB 1333

333 MHz

FSB 1066

266 MHz

FSB 800

200 MHz

The following item appears only when you set the AI Overclocking item to [Overclock Profile].

Overclock Options [Overclock 5%]

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 (for 1600MHz FSB CPU): [800MHz] [960MHz] [1000 MHz] [1200MHz]

Configuration options (for 1333MHz FSB CPU): [Auto] [667MHz] [800 MHz] [1000 MHz] [1110MHz]

Configuration options (for 1066MHz FSB CPU): [Auto] [667MHz] [800 MHz] [1066 MHz]

Configuration options (for 800MHz FSB CPU): [Auto] [667MHz] [800 MHz]

Selecting a very high DRAM frequency may cause the system to become unstable! If this happens, revert to the default setting.

ASUS P5KPL-CM

2-19