Gigabyte GA-6PMM User Manual page 17

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
CPU (MHz)
SW1:
Auto
66
100
133
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
X11
X11.5
X12
X13
X14
X15
X16
PCI(MHz) 1
33.3 X
33.3 O
33.3 O
33.3 X
1
O
X
O
X
O
X
O
X
O
X
O
O
X
X
X
O
O
X
O
X
O
X
O
10
2 3 4
X X X
O X X
X X X
X X 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
X O
X O
O O
O X
O X
X X
O X
X X
X X
O O
O O
X O
Installation Guide
O : ON, X : OFF
5 6
O O
X X
X X
X X
4
O
O
O
O
O
O
X
X
X
X
X
O
O
O
X
O
X
O
O
O
X
X
X