Asus M2N68-AM - Manual (Page 66)

2-22 Chapter 2: BIOS setup
CPU Frequency (MHz) [200.0]
Allows you to select the target CPU frequency.
Configuration options: [200.0][201.0] [202.0]~[300.0].
The following item appears only when the AI Overclocking item is set to
[Overclock Profile].
The following item appears only when the AI Overclocking item is set to
[MANUAL].
Selecting a very high CPU frequency may cause the system to become
unstable! If this happens, revert to the default setting.
Overclock Options [Auto]
Allows you to select the overclock options. Configuration options: [Auto]
[Overclock 3%] [Overclock 5%] [Overclock 7%] [Test Mode]
PCIE Overclocking [Auto]
Allows you to select the PCIE Overclocking. Configuration options: [Auto] [Manual]
The following item appears only when the PCIE Overclocking item is set to
[Manual].
PCI-Express Frequency [100]
Allows you to select PCI Express frequency. Configuration options: [100]
[101] [102] [103] ... [150]
[Auto] - allows you to set overclocking parameters automatically.
[MANUAL] - allows you to individually set overclocking parameters.
[Standard] - loads the standard settings for the system.
[Overclock Profile] - loads overclocking profiles with optimal parameters for stability
when overclocking.