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Step 2 configure cpu – American Megatrends III User Manual

Page 14

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Apollo III PCI Pentium ISA Motherboard User’s Guide

10

Step 2 Configure CPU

Important

Perform the following steps to configure the

motherboard before installing a CPU.

External and Internal CPU Clock CLK1, CLK2, FREQ1, and FREQ2 are 3-pin bergs that set

the CPU external and internal clock frequencies. FREQ1 and FREQ2 are next
to the CPU. CLK1 and CLK2 are towards the middle of the motherboard.

External

Internal

CLK1

CLK2

FREQ1

FREQ2

66 MHz

166 MHz

Short Pins

1-2

Short Pins

2-3

Short Pins

2-3

Short Pins

2-3

60 MHz

150 MHz

Short Pins

2-3

Short Pins

1-2

Short Pins

2-3

Short Pins

2-3

66 MHz

133 MHz

Short Pins

1-2

Short Pins

2-3

Short Pins

2-3

Short Pins

1-2

60 MHz

120 MHz

Short Pins

2-3

Short Pins

1-2

Short Pins

2-3

Short Pins

1-2

66 MHz

100 MHz

Short Pins

1-2

Short Pins

2-3

Short Pins

1-2

Short Pins

1-2

60 MHz

90 MHz

Short Pins

2-3

Short Pins

1-2

Short Pins

1-2

Short Pins

1-2

50 MHz

75 MHz

Short Pins

2-3

Short Pins

2-3

Short Pins

1-2

Short Pins

1-2

60 MHz

180 MHz

Short Pins

2-3

Short Pins

1-2

Short Pins

1-2

Short Pins

2-3

66 MHz

200 MHz

Short Pins

1-2

Short Pins

2-3

Short Pins

1-2

Short Pins

2-3

Important

Please contact American Megatrends technical

support at 770-246-8645 if you need to support a

CPU running at a higher speed.

Cont’d