Asus P5L-MX - Manual (Page 65)

ASUS P5L-MX 2-19
FSB/CPU External Frequency Synchronization
Front Side Bus CPU External Frequency
FSB 1066 266 MHz
FSB 800 200 MHz
FSB 533 133 MHz
DRAM Frequency [Auto]
Allows you to set the DDR2 operating frequency. Configuration options:
[Auto] [DDR2-400MHz] [DDR2-533MHz] [DDR2-600MHz] [DDR2-667MHz]
[DDR2-800MHz]
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
The following item appears only when you set the AI Overclocking item
to [Manual].
CPU Frequency [200]
Displays the frequency sent by the clock generator to the system bus and
PCI bus. The value of this item is auto-detected by the BIOS. Use the <+>
and <-> keys to adjust the CPU frequency. You can also type the desired
CPU frequency using the numeric keypad. The values range from 100
to 450. Refer to the table below for the correct Front Side Bus and CPU
External Frequency settings.
PCI Express Frequency [Auto]
Allows you to set the PCI Express frequency. This item is set to [Auto] by
default. Configuration options: [Auto] [90]...[150]
CPU Clock Spread Spectrum [Enabled]
Allows you to enable or disable the CPU clock spread spectrum.
Configuration options: [Enabled] [Disabled]
PCIE Clock Spread Spectrum [Disabled]
Allows you to enable or disable the PCIE clock spread spectrum.
Configuration options: [Enabled] [Disabled]
Memory Voltage [Auto]
Allows you to select the DDR2 reference voltage.
Configuration options: [Auto] [1.80V] [1.90V] [1.95V] [2.00V]
Refer to the DDR2 documentation before adjusting the memory voltage.
Setting a very high memory voltage may damage the memory module(s)!