Asus P5E3 - Manual (Page 88)

4-22 Chapter 4: BIOS setup
4.4.13 CPU Spread Spectrum [Auto]
Allows you to disable or set to auto the CPU clock spread spectrum.
Configuration options: [Auto] [Disabled]
4.4.14 PCIE Spread Spectrum [Auto]
Allows you to disable or set to auto the PCI Express clock spread spectrum.
Configuration options: [Auto] [Disabled]
CPU Voltage Damper [Auto]
Allows you to enable or disable the CPU voltage damper.
Configuration options: [Auto] [Disabled] [Enabled]
CPU Voltage Reference [Auto]
Configuration options: [Auto] [0.63x] [0.61x] [0.59x] [0.57x]
North Bridge Voltage Reference [Auto]
Configuration options: [Auto] [0.67x] [0.61x]
The following three items appear when you set the Ai Overclock Tuner item to
[Manual] and [X.M.P.].