The following item appears only when you install a CPU that supports the lock free feature. Only some latest CPUs support this feature

CPU Lock Free [ Auto]

This feature allows you to adjust the CPU multiplier to 14x. Setting this item to [Auto] allows the motherboard to automatically reduce the CPU multiplier value for more flexibility when increasing external FSB. Configuration options: [Auto] [Disabled] [Enabled]

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

CPU 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 CPU frequency. You can also type the desired CPU frequency using the numeric keypad. The values range from 100 to 450.

DRAM Frequency [ Auto]

Allows you to set the DDR operating frequency.

Configuration options: [Auto] [DDR2-400MHz] [DDR2-533MHz] [DDR2‑600MHz] [DDR2‑667MHz] [DDR2‑800MHz] [DDR2‑889MHz] [DDR2‑1066MHz]

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

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Chapter 4: BIOS setup