Asus P5L-MX - Manual (Page 66)

2-20 Chapter 2: BIOS setup
The following item appears only when the AI Overclocking item is set to
[Overclock Profile].
FSB Termination Voltage [Auto]
Allows you to select the FSB termination voltage.
Configuration options: [Auto] [1.20V] [1.30V]
MCH Chipset Voltage [Auto]
Allows you to select the memory controller hub (MCH) voltage.
Configuration options: [Auto] [1.50V] [1.55V] [1.60V] [1.65V]
Overclock Options [Overclock 5%]
Allows you to overclock the CPU speed through the available preset values.
Configuration options: [Overclock 5%] [Overclock 10%]
[Overclock 15%] [Overclock 20%] [Overclock 30%] [FSB888/DDR2-667]
[FSB960/DDR2-800] [FSB1280/DDR2-800] [FSB1333/DDR2-667]
[FSB1333/DDR2-834]