Asus P4P8X User's Guide download pdf (Page 56)

2-16

Chapter 2: BIOS information

Select Screen

Select Item

+- Change Option

F1 General Help

F10 Save and Exit

ESC Exit

AI Overclock Tuner [Manual]

CPU External Frequency (MHz) [100]

CPU Ratio [12]

DRAM Frequency [Auto]

AGP/PCI Frequency (MHz) [Auto]

CPU VCore Offset to .IV [Disabled]

DDR Reference Voltage [Auto]

AGP VDDQ Voltage [1.50V]

Configure System Frequency/Voltage

When you set the AI Overclocking Tuner item to [Manual], the related

overclocking items appear.

If you are using an unlocked CPU, the item CPU Ratio appears under the AI

Overclock Tuner item. You may select your desired ratio from the available

options.

CPU Ratio [12]

This field sets the ratio between the CPU Core Clock and the Front Side Bus (FSB)

Frequency.

If an invalid ratio is set in CMOS, the actual and setpoint values may differ.

CPU External Frequency (MHz) [XXX] (value is auto-detected)

Indicates the frequency sent by the clock generator to the system bus and PCI

bus. The bus frequency (external frequency) multiplied by the bus multiple equals

the CPU speed. The value of this item is auto-detected by BIOS and is not

manually configurable. The values range from 100 to 400. Refer to the following

table for the correct Front Side Bus and CPU External Frequency settings.

DRAM Frequency [Auto]

Allows you to set the DDR operating frequency. Configuration options: [266 MHz]

[333 MHz] [400 MHz] [Auto]

AGP/PCI Frequency (MHz) [Auto]

Allows you to adjust to a higher AGP/PCI frequency for better system performance

and overclocking capability. Configuration options: [Auto] [66.66/33.33] [72.73/

36.36] [80.00/40.00]

Selecting a very high AGP/PCI frequency may cause the system to become

unstable! If this happens, revert to the default setting.

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Asus P4P8X User's Guide Page 56