Asus P5B-PLUS P5B-Plus user's manual - Page 87

CPU Frequency [XXX], DRAM Frequency [Auto], PCI Express Frequency [Auto], PCI Clock Synchronization

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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 CPU External Frequency 266 MHz 200 MHz The CPU Frequency item appears only when you set the AI Tuning item to [Manual]. 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: [Auto] [DDR2 - 533MHz] [DDR2 - 667MHz] [DDR2 - 800MHz] [DDR2 - 889MHz] [DDR2 - 1067MHz] 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 always appears on the Advanced menu. • The following items appear only when you set the AI Tuning item to [Manual] 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 Mode [Auto] Allows you to synchronize the PCI frequency with the PCI Express or CPU frequency. Configuration options: [Auto] [33.33MHz] Spread Spectrum [Auto] Allows you to enable or disable the clock generator spread spectrum. Configuration options: [Disabled] [Enabled] [Auto] ASUS P5B-Plus Series 4-17

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ASUS P5B-Plus Series
4-17
FSB/CPU External Frequency Synchronization
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.
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
The
CPU Frequency
item appears only when you set the
AI Tuning
item to
[Manual].
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: [Auto] [DDR2 - 533MHz] [DDR2 - 667MHz]
[DDR2 - 800MHz] [DDR2 - 889MHz] [DDR2 - 1067MHz]
Front Side Bus
CPU External Frequency
FSB 10µµ
±µµ MHz
FSB
·00
±00 MHz
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 Mode [Auto]
Allows you to synchronize the PCI frequency with the PCI Express or CPU frequency.
Configuration options: [Auto] [33.33MHz]
Spread Spectrum [Auto]
Allows you to enable or disable the clock generator spread spectrum.
Configuration options: [Disabled] [Enabled] [Auto]
•
The
DRAM Frequency
item always appears on the
Advanced
menu.
•
The following items appear only when you set the
AI Tuning
item to
[Manual]