beautypg.com

Asus P4B533 User Manual

Page 44

background image

2-18

Chapter 2: Hardware information

3. CPU external frequency selection (DSW1 Switches 1-6)

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).

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

To select the CPU external frequency using the DIP switches, ensure
that the JEN jumper is set to jumper mode.

P4B533

®

DSW1

P4B533 CPU
External Frequency Selection

CPU
AGP
PCI

100MHz

66MHz
33MHz

ON

123

4

5

6

105MHz

70MHz
35MHz

ON

123

4

5

6

109MHz

72MHz
36MHz

ON

123

4

5

6

133MHz

66MHz
33MHz

ON

123

4

5

6

141MHz

70MHz
35MHz

ON

123

4

5

6

145MHz

72MHz
36MHz

ON

123

4

5

6

166MHz

66MHz
33MHz

ON

123

4

5

6

200MHz

66MHz
33MHz

ON

123

4

5

6

CPU
AGP
PCI