Asus A7V8X-MXSE 1.CPU external frequency selection (SW1 Switches 1-5)

1.11Switch and jumpers

The motherboard frequency is adjusted through the DIP switches. The white block represents the switch position. The illustration below shows the ON and OFF positions of the switches.

A7V8X-MX SE

DSW

ON ON

OFF

1 2 3 4 5

1.Frequency Selection 2.Frequency Selection 3.Frequency Selection 4.Frequency Selection 5.Frequency Selection

A7V8X-MX SE DIP Switches

The option to set the CPU core bus frequency multiple is available only on unlocked CPUs. If you are using a locked CPU, setting the switches does not produce any effect.

1.CPU external frequency selection (SW1 Switches 1-5)

This option tells the clock generator what frequency to send the CPU. This allows the selection of the CPU’s external frequency (or Bus Clock). The BUS Clock multiplied by the Frequency Multiple equals the CPU’s internal frequency (the advertised CPU speed).

The default CPU external frequency is 100MHz. If your CPU supports 133/166MHz external frequency, adjust the DSW settings before installing the motherboard to the chassis.

		DSW
		ON			ON		ON
		1 2 3 4 5			1 2 3 4 5		1 2 3 4 5
	CPU		100MHz	166.67MHz		133.33MHz
	AGP	66.67MHz		66.67MHz		66.67MHz
A7V8X-MX SE	PCI	33.33MHz		33.33MHz		33.33MHz
		(Default)

A7V8X-MX SE CPU

External Frequency Selection

Set the CPU frequency only to the recommended settings. Frequencies other than the recommended CPU bus frequencies are not guaranteed to be stable.

1-14 Chapter 1: Product introduction