MSI MS-5153 Manual page 10

CHAPTER 2
2. The DIP Switch SW1 (1, 2, and 3) is used to set the Core/Bus (Fraction)
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 CPU Clock
Core/Bus ratio
then CPU core speed
1
OFF
ON
ON
OFF
3. The PCI Bus Clock is the CPU Clock Frequency divided by 2.
2.1-3 CPU Voltage
The mainboard voltage regulators can automatically detect and switch
between Single and Dual voltage. It can detect single voltage ranging from
3.38 volts to 3.52 volts. And dual voltage ranging from 2.0 volts to 3.2 volts.
=
=
=
=
=
SW1
2
OFF
OFF
ON
ON
HARDWARE INSTALLATION
66MHz
3/2
Host Clock x Core/Bus ratio
66MHz x 3/2
100MHz
CPU
3 Core/Bus Ratio
OFF 1.5 /3.5
OFF
OFF 2.5/1.75
OFF
2-3
2
3