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A
K
7
5
P
r
o
A
K
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5
P
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o
J
P
2
1
F
S
B
/
P
C
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C
l
J
P
2
1
F
S
B
/
P
C
I
C
This jumper is used to specify
Additionally, this motherboard also provides "1MHz Stepping Adjustment" feature for overclockers to adjust CPU FSB frequency via BIOS
setup program. Based on the CPU type, the adjustment range has two levels: 100~123 (FSB=100, such as Athlon 800), 124~200
(FSB=133, such as Athlon 1000) MHz for your choosing. You may also choose a specific FSB frequency ranging from 100~124 (say, 105,
110, 115 for example) and 133~166 with reference to a frequency table in BIOS setup program. If you fix the CPU FSB frequency by JP21,
the "1MHz Stepping Adjustment" range will be changed and following your JP21 setting. To adjust CPU clock ratio, you may just adjust the
select switch as table shows.
o
c
k
R
a
t
i
o
l
o
c
k
R
a
t
i
o
FSB
clock. Generally speaking, if you are not overclockers, we recommend you to set it to the default setting.
-
SW1 CPU Ratio
Select Switch
FSB=100MHz
(Default)
CPU Ratio
+
5
5.5
1
6
2
6.5
3
7
4
7.5
8
8.5
9
9.5
10
10.5
11
11.5
12
12.5
CPU Default
FSB=133MHz
24
O
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l
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n
e
M
a
O
n
l
i
n
e
M
a
SW1-1
SW1-2
SW1-3
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＋
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＋
＋
－
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－
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＋
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＋
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－
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－
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0
0
0
n
u
a
l
n
u
a
l
SW1-4
－
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0
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