Asus A7V8X-MX SE User Manual page 22

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
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.
®
A7V8X-MX SE
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
DSW
ON ON
OFF
1 2 3 4 5
1.Frequency Selection
2.Frequency Selection
3.Frequency Selection
4.Frequency Selection
5.Frequency Selection
DSW
ON ON
1 2 3 4 5 1 2 3 4 5
CPU 100MHz 166.67MHz
AGP 66.67MHz 66.67MHz
PCI 33.33MHz 33.33MHz
(Default)
Chapter 1: Product introduction
ON
1 2 3 4 5
133.33MHz
66.67MHz
33.33MHz