6240V Mainboard Chapter 1 Introduction
5
1-3-3 Running 100 MHz CPU Bus (with JP11)
The mainboard provides
Jumper 11
that allows you to set your CPU host clock
and perform CPU overclock function. There are two ways to set CPU host clock at
‘closed’ and ‘open’. When setting ‘closed’, the system will automatically detect the
CPU host clock, for instance 66MHz and 100MHz. Another way is to set
Jumper 11
at ‘open’ for 66MHz CPU overclock to 100MHz.
We recommend that users should use Intel Pentium
II/III 100 MHz CPU, running
at 350, 400, 450 and 500MHz internal clock speed. Moreover, the SDRAM memory
module must be 8 nano-second (Maximum Frequency 125 MHz) speed of
memory –die or less. However, based on Intel’s design, we don’t recommend users to
run over 100MHz CPU host bus.
Please note that the default setting of Jumper 11 is ‘closed’.
Jumper 11 BASE CLK
Closed
Base clock autodetected
Open
To be overclocked
(a) Pin Closed (b)
Pin Open
-
In view of Intel’s specific design, overclocking to 100MHz or higher is
not necessarily successful. If you want to overclock your CPU base, please
set “CPU Host/PCI Clock” in “CHIPSET FEATURES SETUP” in the BIOS
setup screen. After set to higher base, if the system cannot boot up , you
should shut down your computer, and restart it with the ‘Insert” key
pressed down to clear up the set frequency. It will then operate at the default
frequency.
JP11
Slot 1