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6VTXE 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 500 – 1G Hz processor.
Set System Bus Speed
SW1:
CPU (MHz)
1
Auto
X
66
O
75
O
83
O
100
O
112
O
124
X
133
X
140
X
150
X
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
X3
O
X3.5
X4
O
X4.5
X5
O
X5.5
X6
O
X6.5
X7
O
X7.5
X8
O
X8.5
O
X9
X9.5
X10
X10.5
O
X11
O
X11.5
X12
O
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
1
2
X
X
X
O
X
O
X
X
X
O
X
O
X
X
X
O
X
X
X
X
O
X
O
O
X
X
O
X
7
O : ON, X : OFF
5
6
PCI(MHz)
O
O
33.3
X
X
33.3
X
X
37.5
X
X
41.6
X
X
33.3
X
X
37.3
X
X
31
X
X
33.3
X
X
35
X
X
37.5
3
4
O
O
O
O
X
O
X
O
X
O
X
O
O
X
O
X
O
X
O
X
X
X
O
O
O
O
O
O
X
X
X
O
X
X
X
O
X
O
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