About Pentium  & Celeron™ 370-Pin Cpu; Setting Cpu Bus Clock & Memory Clock Jumper - JETWAY 613CN User Manual

2-3-1 About Pentium  III & Celeron™ 370-pin CPU
This motherboard supports both Pentium III & Celeron 370 pins CPU.
The way to recognize the specification of CPU from the packing Pentium III 370
pins FC-PGA
On the surface of the CPU as shown on the right picture, under the word of
"PENTIUM III" the code is:
RB 80526 P2 866 256
RB : FC–PGA packing
P2 : P2–133MHz front side bus frequency
PY–100MHz front side bus frequency
866 : CPU internal frequency, where here is
866MHz
256 : the size of L2 cache, where here is 256K
Celeron FC–PGA
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 JP6, JP7, JP17 and JP18 for the front side bus
frequency and SDRAM frequency setting as shown from the table below:
CPU/SDRAM (MHz)
AUTO
66/100
100/100
133/100
Using a Pentium  III 866 CPU with front side bus frequency of 133MHz
Example:
and PC-133 SDRAM module, the setting of JP6, JP7 will be all 1-2, and
JP6 JP7
1-2 1-2
2-3 2-3
2-3 1-2
1-2 1-2
9
JP17 JP18
ON ON
OFF OFF
OFF OFF
OFF OFF
* Default