MSI NLX LX3 Manual page 20

2. The DIP Switch SW1 (1, 2, 3, and 4) is used to set the Core/Bus (Frac-
tion) ratio of the CPU. The actual core speed of the CPU is the Host
Clock Frequency multiplied by the Core/Bus ratio. For example:
If
then
1
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
3. The PCI Bus Clock is fixed at 33MHz.
CPU Clock
Core/Bus ratio
CPU core speed =
2 3
OFF ON
ON OFF
OFF OFF
ON ON
OFF ON
ON OFF
OFF OFF
ON ON
OFF ON
ON OFF
OFF OFF
ON ON
= 66MHz
= 1.5
Host Clock x Core/Bus ratio
= 66MHz x 1.5
= 100MHz
4 Core/Bus Ratio
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
2-15
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8