The configuration options for the following sub-item vary depending on the

DIMMs you install on the motherboard.

eXtreme Memory Profile [Disabled]

This item appears only when you set the Ai Overclock Tuner item to [X.M.P.]. Allows you to select the X.M.P. mode supported by your Memory module.

Configuration options: [Disabled] [Profile #1] [Profile #2]

4.4.2CPU Ratio Control [Auto]

Configuration options: [Auto] [Manual].

Ratio CMOS Setting [9]

This item appears only when you set the CPU Ratio Control item to [Manual]. Allows you to set the ratio between CPU Core Clock and the FSB Frequency. Use the <+> and <-> keys to adjust the ratio. If an invalid ratio is set in CMOS, then actual and setpoint values may differ.

4.4.3FSB 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] [200MHz] [266MHz] [333MHz]

The following item appears 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 FSB frequency. You can also type the desired CPU 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

CPU External Frequency

FSB 1333

333 MHz

FSB 1066

266 MHz

FSB 800

200 MHz

4-18

Chapter 4: BIOS setup