Instruction Manual

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Chapter 4: BIOS setupChapter 4: BIOS setup

Chapter 4: BIOS setup

CPU to NB Trapping [Auto]CPU to NB Trapping [Auto]

CPU to NB Trapping [Auto]

Sets the CPU to the NorthBridge trapping frequency.

Configuration options: [Auto] [000(100/266MHz)] [001(133MHz)]

[010(200MHz)] [011(166MHz)]

CPU Frequency [XXX] (value is auto-detected)CPU Frequency [XXX] (value is auto-detected)

CPU Frequency [XXX] (value is auto-detected)

Indicates the frequency sent by the clock generator to the system bus and

PCI bus. The bus frequency (external frequency) multiplied by the bus

multiple equals the CPU speed. The value of this item is auto-detected by

BIOS. The values range from 100 to 400. Refer to the following table for

the correct Front Side Bus and CPU External Frequency settings. Use the

<+><+>

<+> and

<-><->

<-> keys to adjust the value.

Selecting a very high CPU frequency may cause the system to become

unstable! If this happens, revert to the default setting.

Table 4.4.2 FSB/CPU External Frequency SynchronizationTable 4.4.2 FSB/CPU External Frequency Synchronization

Table 4.4.2 FSB/CPU External Frequency Synchronization

Front Side BusFront Side Bus

Front Side Bus

CPU External FrequencyCPU External Frequency

CPU External Frequency

FSB 800 200 MHz

FSB 533 133 MHz

FSB 400 100 MHz

The following item appears only when the AI Overclocking item is set to

[Manual].

PCI Express Frequency [100]PCI Express Frequency [100]

PCI Express Frequency [100]

Sets the PCI Express frequency. Configuration options: [90] [91] ~ [120]

SATA Clock Sync to PCIEX [Disabled]SATA Clock Sync to PCIEX [Disabled]

SATA Clock Sync to PCIEX [Disabled]

Enables or disables the SATA clock synchronization to the PCI Express.

Configuration options: [Disabled] [Enabled]

PCI Clock Synchronization Mode [Asynchronization]PCI Clock Synchronization Mode [Asynchronization]

PCI Clock Synchronization Mode [Asynchronization]

Selects the PCI Clock Synchronization mode.

Configuration options: [To CPU] [To PCI Express] [Asynchronization]