Ratio CMOS Setting [Auto]

Allows you to adjust the ratio between CPU Core Clock and FSB Frequency. Use the <+> and <-> keys to adjust the value.

Configuration options: [Auto] [06.0] [07.0] [08.0] [09.0] [10.0]

The following two items appear only when you set the Ai Overclock Tuner item to [Manual].

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 frequency. You can also type the desired frequency using the numeric keypad. The values range from 200 to 800. Refer to the table below for the correct Front Side Bus and CPU External Frequency settings.

FSB/CPU External Frequency Synchronization

Front Side Bus

FSB 1600

FSB 1333

FSB 1066

FSB 800

CPU External Frequency

400 MHz

333 MHz

266 MHz

200 MHz

PCIE Frequency [Auto]

Allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust the frequency or t���ype ���the �������desired frequency��������� using����� the��� numeric������� keypad�������. ���The ������values range from 100 to 180.

FSB Strap to North Bridge [Auto]

When set to [Auto], the FSB Strap will be adjusted automatically by FSB Frequency and DRAM Frequency.

Congifuration options: [Auto] [200 MHz] [266 MHz] [333 MHz] [400 MHz]

DRAM Frequency [Auto]

Allows you to set the DDR2 operating frequency.

Configuration options: [Auto] [DDR2-667 MHz] [DDR2-800 MHz] [DDR2-835MHz] [DDR2-887 MHz] [DDR2-1002MHz] [DDR2-1066MHz] [DDR2-1111����MHz] [DDR2-1335MHz]

The DRAM Frequency configuration options vary with the FSB Frequency item settings.

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

3-18

Chapter 3: BIOS setup