Asus D700-NIB, User Manual

Page: 37 / 116

ASUS P4B-M motherboard user guide 2-17
2.7 Switches and jumpers
2.7.1 Switch settings
The motherboard frequency is adjusted through the DIP switches. The
white block represents the switch position. The illustration below shows all
the switches in the default position.
Figure 2-21 DIP Switches
CPU frequency selection (SWITCH 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).
Figure 2-22 CPU Frequency Settings
Set the CPU frequency only to the recommended settings.
Frequencies other than the recommended CPU bus frequencies are
not guaranteed to be stable.
®
P4B-M
ON 12345
P4B-M CPU
External Frequency Selection
CPU
DIP_SW
100MHz
ON
105MHz
ON
133MHz
ON
141MHz
12345
12345 12345
(Default)
®
P4B-M
P4B-M DIP Switches
1. Frequency Selection
2. Frequency Selection
3. Frequency Selection
4. Frequency Selection
5. Frequency Selection
ON 12345
DIP_SW
ON
OFF