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6VM7-4I Motherboard
CPU Speed Setup
The system bus speed is selectable at 66,100,133MHz and Auto. The user can select the
system bus speed (SW1) and change the DIP switch (SW2) selection to set up the CPU speed
for 300MHz –1GHz and faster processor.
Set System Bus Speed
SW1:
CPU (MHz)
Auto
66
75
83
100
112
124
133
140
150
The CPU speed must match with the frequency ratio. It will cause system hanging up if
the frequency ratio is higher than that of CPU.
SW2:
FREQ. RATIO
X 3
X 3.5
X 4
X 4.5
X 5
X 5.5
X 6
X 6.5
X 7
X 7.5
X 8
X 8.5
X 9
X 9.5
X 10
X 10.5
PCI(MHz)
1
33.3
X
33.3
O
37.5
O
41.6
O
33.3
O
37.3
O
31
X
33.3
X
35
X
37.5
X
1
O
X
O
X
O
X
O
X
O
X
O
X
O
X
O
X
7
2
3
4
X
X
X
O
X
X
O
O
X
O
X
O
X
X
X
X
O
X
X
X
O
X
X
X
X
O
O
X
O
X
DIP SWITCH
2
3
X
O
X
O
O
X
O
X
X
X
X
X
O
O
O
O
X
O
X
O
O
X
O
X
X
X
X
X
O
O
O
O
O : ON, X : OFF
5
6
O
O
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
4
O
O
O
O
O
O
X
X
X
X
X
X
X
X
O
O
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