Asus P5B PREMIUM VIST Motherboard Installation Guide - Page 82

PCI Clock Synchronization Mode [Auto]

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The following items appear only when the AI Tuning item is set 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 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 CPU External Frequency FSB 1066 FSB 800 266 MHz 200 MHz FSB 533 133 MHz PCI Express Frequency [Auto] Allows you to select PCI Express frequency. Configuration options: [Auto] [90] [91] [92] [93]... [150] PCI Clock Synchronization Mode [Auto] Selects the PCI Clock Synchronization mode. Configuration options: [Auto] [33.33MHz] The following items appear only when the AI Tuning item is set to [Manual] or [AI N.O.S.]. Memory Voltage [Auto] Allows you to select the memory voltage or set it to auto for safe mode. Configuration options: [Auto] [1.80V] [1.90V] [2.00V] [2.10V] CPU VCore Voltage [Auto] Allows selection of the CPU VCore voltage. The configuration options vary depending on the CPU installed. Setting to Auto allows the BIOS to detect the VCore voltage of the CPU installed. Refer to the CPU documentation before setting the CPU VCore voltage. A very high Vcore voltage can severely damage the CPU! FSB Termination Voltage [Auto] Allows you to select the FSB termination voltagae or set it to auto for safe mode. Configuration options: [Auto] [1.200V] [1.300V] 4-18 Chapter 2: BIOS setup

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4-±8
Chapter 2: BIOS setup
FSB Termination Voltage [Auto]
Allows you to select the FSB termination voltagae or set it to auto for safe mode.
Configuration options: [Auto] [1.200V] [1.300V]
The following items appear only when the AI Tuning item is set 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 ±00 to 400. Refer to the table below for
the correct Front Side Bus and CPU External Frequency settings.
PCI Express Frequency [Auto]
Allows you to select PCI Express frequency.
Configuration options: [Auto] [90] [91] [92] [93]... [150]
PCI Clock Synchronization Mode [Auto]
Selects the PCI Clock Synchronization mode.
Configuration options: [Auto] [33.33MHz]
FSB/CPU External Frequency Synchronization
Front Side Bus
CPU External Frequency
FSB ±066
266 MHz
FSB 800
200 MHz
FSB 533
±33 MHz
Refer to the CPU documentation before setting the CPU VCore voltage. A very
high Vcore voltage can severely damage the CPU!
The following items appear only when the AI Tuning item is set to [Manual] or
[AI N.O.S.].
Memory Voltage [Auto]
Allows you to select the memory voltage or set it to auto for safe mode.
Configuration options: [Auto] [1.80V] [1.90V] [2.00V] [2.10V]
CPU VCore Voltage [Auto]
Allows selection of the CPU VCore voltage. The configuration options vary
depending on the CPU installed. Setting to Auto allows the BIOS to detect the
VCore voltage of the CPU installed.