Asus Motherboard P5ND2 - Manual (Page 70)

2-24 Chapter 2: BIOS setup
Spread Spectrum Control
This sub-menu allows you to set the CPU, PCI Express, Serial ATA, and
Lightning Data Transport (LDT) clock generator spread spectrum. The
spread spectrum is used to dynamically change the system frequency
to minimize problems with electromagnetic interference (EMI). Set the
Overclock Profile to [Manual], if you want to configure this item.
Select Menu
Item Specific Help
Press [Enter] to set.
F1:Help ↑↓ : Select Item -/+: Change Value F5: Setup Defaults
ESC: Exit →←: Select Menu Enter: Select Sub-menu F10: Save and Exit
Spread Spectrum Control
CPU Spread Spectrum [ Disabled ]
PCIE Spread Spectrum [Disabled]
LDT Spread Spectrum [Disabled]
Phoenix-Award BIOS CMOS Setup Utility
Advanced
CPU Spread Spectrum [Disabled]
Disables or sets the CPU clock generator spread spectrum. The default
setting [Center Spread] allows a dynamic CPU frequency change of
-0.25% to +0.25%. The [Down Spread] setting allows a dynamic CPU
frequency change of -0.5% to 0.0%. Setting to [0.5%++ Spread]
allows dynamic frequency changes from -0.5% to +0.5%.
Configuration options: [Disabled] [Center Spread] [Down Spread]
[0.5%++ Spread]
PCIE Spread Spectrum [Disabled]
Disables or sets the PCI Express clock generator spread spectrum. The
default setting [Down Spread] allows a dynamic PCI Express frequency
change of -0.5% to 0.0%.
Configuration options: [Disabled] [Down Spread]
LDT Spread Spectrum [Disabled]
Disables or sets the Lightning Data Transport (LDT) clock generator
spread spectrum. The default setting [Center Spread] allows a
dynamic LDT frequency change of -0.25% to +0.25%.
Configuration options: [Disabled] [Center Spread] [Down Spread]