Asus P5B Premium Series Hardware User Manual page 89

N.O.S. Mode [Auto]
Configuration options: [Auto] [Standard] [Sensitive] [Heavy Load]
The N.O.S. Mode item only appears when you set the AI Tuning item to
[AI N.O.S].
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 650. Refer to the table below for
the correct Front Side Bus and CPU External Frequency settings.
FSB/CPU External Frequency Synchronization
Front Side Bus
FSB 1066
FSB 800
DRAM Frequency [Auto]
Allows you to set the DDR operating frequency.
Configuration options:
Available DRAM frequency options in various FSB settings
FSB Configuration options
Auto
FSB 1066 •
FSB 800 •
* Provided for overclocking purpose only.
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 N.O.S].
PCI Express Frequency [Auto]
Allows you to set the PCI Express frequency. This item is set to [Auto] by default.
Configuration options: [Auto] [90] [91] ~ [149] [150]
PCI Clock Synchronization [Auto]
Allows you to synchronize the PCI frequency with the PCI Express or CPU
frequency. Configuration options: [Auto] [33.33MHz]
ASUS P5B Premium Series
CPU External Frequency
266 MHz
200 MHz
DDR2- DDR2- DDR2-
533 667 800
• •
• •
DDR2- DDR2-
889* 1067*
• • •
•
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