Asus M2NBP-VM CSM - Manual (Page 65)

ASUS M2NBP-VM CSM 2-21
The following item becomes user-configurable when you set AI Tuning to
[AI Overclock].
Overclock Options [Disabled]
Allows you to set the overclocking options.
Configuration options: [Disabled] [Overclock 3%] [Overclock 5%] [Overclock 8%]
[Overclock 10%]
The following items become user-configurable when you set AI Tuning to
[Manual].
CPU Frequency [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 BIOS auto-detects the value of this item. The values range from
200.0 to 400.0.
Setting a very high CPU frequency may cause the system to become unstable.
If this happens, revert to the default setting.
DDR2 Voltage Control [Auto]
Allows you to set the operating DDR2 voltage. Configuration options: [Auto] [1.9V]