![background image](http://html1.mh-extra.com/html/creative/blaster-pc-m004/blaster-pc-m004_user-manual_2680780038.webp)
Jumper Settings 5-3
To configure the CPU bus clock multiplier
The JP37 jumper is used to configure the CPU bus clock multiplier. If
you want the CPU clock speed to be set by BIOS, do not remove the
jumper pack from the JP37 jumper (Auto setting). As the motherboard
features CPU Plug & Play function, the BIOS will select the CPU
clock speed corresponding to the 233 MHz or 350 MHz processor
automatically when the system is switched on for the first time. The
clock speed selected will depend on your CPU type. If the CPU clock
speed is higher than that selected, you can use the CMOS Setup utility
to change it.
Alternatively, if you want to specify the CPU clock speed manually,
you should first remove the jumper pack and use the JP37 jumper
settings shown below to achieve the multiplier ratio you want (Manual
setting). You can then use JP39 jumper settings to set the CPU clock
speed manually.
Table 5-2 shows the multiplier needed for various processor speeds
with the system clock speed at 66 MHz and at 100 MHz.
To retain the JP37 jumper Auto setting
Leave the jumper pack on JP37.
To configure the Host Bus Clock/CPU Core Clock ratio
(multiplier) manually
Remove the jumper pack, and then set the jumper according to
the multiplier that you want (see Table 5-3).
Table 5-2:
Settings for System Clock and Multiplier.
Pentium II/
Celeron
Processor
System
Clock
Multiplier
Pentium II
Processor
System
Clock
Multiplier
233 MHz
66 MHz
3.5x
350 MHz
100 MHz
3.5x
266 MHz
66 MHz
4x
400 MHz
100 MHz
4x
300 MHz
66 MHz
4.5x
450 MHz
100 MHz
4.5x
333 MHz
66 MHz
5x
500 MHz
100 MHz
5x