INSTALLING THE CPU AND MEMORY
INSTALLING THE CPU AND MEMORY
P6F40-B5 User’s Manual
P6F40-B5 User’s Manual
9
9
Setting the CPU Clock Selection Jumpers (JP3-5)
After installing the CPU, you must set
the clock selection jumper to match the
frequency of the CPU. Find the Jumper
Blocks labeled JP3-4 and JP5 on the
mainboard (Refer to the diagram on
page 7). Set the jumper according to the
table below for the CPU frequency you are using.
The CPU Clock corresponds to the number marked on the CPU. The
Bus Clock
when
multiplied with the
Ratio
gives the
CPU Clock
.
Bus Clock (MHz)
CPU Clock Ratio
60
66
x2
x2.5
x3
x3.5
x4
JP3
JP4
JP5
These jumpers automatically set the ISA Clock as well.
* If you are uncertain about the speed or voltage requirements of your particular CPU, you
should obtain Technical Documentation from the manufacturer. Such information is
available via the Intel WWW site.
CPU Clock
Ratio
Bus Clock
150MHz
x2.5
60MHz
166MHz
x2.5
66MHz
180MHz
x3.0
60MHz
200MHz
x3.0
66MHz
