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Cpu ratio control [auto, Fsb frequency [xxx, Pcie frequency [auto – Asus P5K-VM User Manual

Page 70: Dram frequency [auto, Dram timing control [auto

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Chapter 2: BIOS setup

Some of the following items appear when you set AI Overclocking to [Manual].

CPU Ratio Control [Auto]

Configuration options: [Auto] [Manual]

The following item appears when the CPU Ratio Control item is set to

[Manual].

Ratio CMOS Setting [12]

Use the <+> and <-> keys to select the CMOS ratio values from 6 to 12.

FSB Frequency [XXX]

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

bus. Use the <+> and <-> keys to adjust the FSB frequency. You can also type

the desired FSB 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

PCIE Frequency [Auto]

Allows you to set the PCI Express frequency.

Configuration options: [Auto] [100] [101]~[149] [150].

DRAM Frequency [Auto]

Allows you to set the DDR2 operating frequency.

Configuration options: [Auto] [DDR2-667MHz] [DDR2-800MHz] [DDR2-1066MHz]

Selecting a very high DRAM frequency may cause the system to become

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

DRAM Timing Control [Auto]

Allows you to set the DRAM timing control. Configuration options: [Auto] [Manual]

The following items appear when you set the DRAM Timing Control item to

[Manual].

Front Side Bus

CPU External Frequency

FSB 1333

333 MHz

FSB 1066

266 MHz

FSB 800

200 MHz