Asus P5B-E Plus User Manual page 84

The following items appear only when you set the AI Tuning item to [Manual].
CPU Frequency [XXX]
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 400. Refer to the table below for
the correct Front Side Bus and CPU External Frequency settings.
FSB/CPU External Frequency Synchronization
Front Side Bus
N.O.S. Mode [Auto]
Allows you to set the N.O.S. mode.
Configuration options: [Auto] [Standard] [Sensitive] [Heavy Load]
The N.O.S. Mode item appears only when you set the AI Tuning item to [AI
N.O.S.].
DRAM Frequency [Auto]
Allows you to set the DDR operating frequency.
Configuration options:
Available DRAM frequency options in various FSB settings
FSB
FSB 10
FSB 00
* Provided for overclocking purpose only.
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
The DRAM Frequency item also appears when you set the AI Tuning item to
[AI NOS].
PCI Express Frequency [Auto]
Allows you to set the PCI Express frequency. This item is set to [Auto] by default.
Configuration options: [Auto] [100] [101] ~ [149] [150]
PCI Clock Synchronization Mode [Auto]
Allows you to synchronize the PCI frequency with the PCI Express or CPU frequency.
Configuration options: [Auto] [33.33MHz]
-1
FSB 10
FSB 00
Auto DDR- DDR-
 
• •
• •
CPU External Frequency
 MHz
00 MHz
Configuration options
DDR- DDR-
00 *
• • •
• •
DDR-
10*
•
Chapter 4: BIOS setup