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

CPU Frequency [ 200]

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 100

to 450. 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 1066

266 MHz

FSB 800

200 MHz

FSB 533

133 MHz

DRAM Frequency [ Auto]

Allows you to set the DDR2 operating frequency. Configuration options: [Auto] [DDR2-400MHz] [DDR2-533MHz] [DDR2-600MHz] [DDR2‑667MHz]

[DDR2‑800MHz]

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

PCI Express Frequency [ Auto]

Allows you to set the PCI Express frequency. This item is set to [Auto] by default. Configuration options: [Auto] [90]...[150]

CPU Cl ock Spread Spectrum [Enabl ed]

Allows you to enable or disable the CPU clock spread spectrum. Configuration options: [Enabled] [Disabled]

PCIE Cl ock Spread Spectrum [ Di sabl ed]

Allows you to enable or disable the PCIE clock spread spectrum. Configuration options: [Enabled] [Disabled]

Memory Vol tage [ Auto]

Allows you to select the DDR2 reference voltage.

Configuration options: [Auto] [1.80V] [1.90V] [1.95V] [2.00V]

Refer to the DDR2 documentation before adjusting the memory voltage. Setting a very high memory voltage may damage the memory module(s)!

ASUS P5L-MX

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