Chapter 4 Hardware Settings

4.1SW1(1-8): CPU Frequency Selector For Intel Pentium CPU

 

SW1

 

 

Bus Clock

Mutiplier

CPU FREQ.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60MHz

1.5x

P54C-90

 

 

 

 

 

 

 

on off off off off off off off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66MHz

1.5x

P54C-100

 

 

 

 

 

 

 

 

 

 

 

off off off off off off off off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60MHz

2x

P54C-120

 

 

 

 

 

 

 

 

 

 

 

on off off off on off off off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66MHz

2x

P54C-133

 

 

 

 

 

 

 

 

 

 

 

off off off off on off off off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60MHz

2.5x

P54C-150

 

 

 

 

 

 

 

 

 

 

 

on off off off on on off off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66MHz

2.5x

P54C/P55C-16

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

off off off off on

on off off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66MHz

3x

P54C/P55C-20

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

off off off off off on off off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66MHz

3.5x

P55C-233

 

 

 

 

 

 

 

 

 

 

 

off off off off off off off off

 

 

 

 

 

 

 

 

 

 

*P55C = Pentium with MMX technology

NOTE: SW1(4) and SW1(8) are inconsequential. They could be set to either ON or OFF.

14

AI5VG Pentium VP3 Baby AT Motherboard User’s Manual

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Intel AI5VG user manual SW11-8 CPU Frequency Selector For Intel Pentium CPU, Bus Clock Mutiplier