Setting Cpu Bus Clock & Memory Clock Jumper; Install Cpu - JETWAY 815EDA1A User Manual

On the surface of the CPU as shown on the right picture, under the word of "Celeron" the
code is:
566/128/66/1.5V
566 : CPU internal frequency, where here is 566MHz
128 : the size of L2 cache, where here is 128K
66 : front side bus frequency, where here is 66MHz
1.5V : the voltage for the CPU
2-3-2 Setting CPU Bus Clock & Memory Clock Jumper
Setting the front side bus frequency and SDRAM frequency
The motherboard uses jumper
SDRAM frequency setting as shown from the table below:
CPU/SDRAM (MHz)
AUTO
66/100 (Default)
100/100
133/100
133/133
Example: Using a Pentium
PC-133 SDRAM module, the setting of JS3 will be 2-3 and JS4 will be 1-2.
This sets both CPU BUS CLOCK and SDRAM CLOCK to be 133MHz.
For experience user looking for over clocking possibility, please refer to sec 2-3-4.

2-3-3 Install CPU

This motherboard provides a ZIF socket 370. The CPU that comes with the motherboard
should have a cooling FAN attached to prevent overheating. If this is not the case, then
purchase a correct cooling FAN before you turn on your system.
WARNING! Be sure that there is sufficient air circulation across the processor's
heatsink and CPU cooling FAN is working correctly, otherwise it may
cause the processor and motherboard overheat and damage, you may install
an auxiliary cooling FAN, if necessary.
To install a CPU, first turn off your system and remove its cover. Locate the ZIF socket and
open it by first pulling the level sideways away from the socket then upward to a 90-degree
angle. Insert the CPU with the correct orientation as shown below. The notched corner
should point toward the end of the level. Because the CPU has a corner pin for two of the
four corners, the CPU will only fit in the orientation as shown.
JS1, JS2, JS3 and
JS1 JS2
ON ON
OFF OFF
OFF OFF
OFF OFF
OFF OFF

III 866 CPU with front side bus frequency of 133MHz and
10
JS4 for the front side bus frequency and
JS3 JS4
1-2 1-2
2-3 2-3
1-2 2-3
1-2 1-2
2-3 1-2