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A
K
7
7
-
4
0
0
N
/
A
A
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7
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0
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/
A
J
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1
K
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C
This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, if you are not an over-clocker, we
recommend you to set it to the default setting. Additionally, this motherboard also provides "1MHz Stepping Adjustment"
feature for overclockers to adjust CPU FSB frequency via BIOS setup program. If you fix the CPU FSB frequency by JP21, the
"1MHz Stepping Adjustment" range will be changed according to what type of CPU you use.
JP 21
CPU FSB
133 MHz
1-2
166 MHz
(default)
200 MHz
2-3
/
Pin 1
JP21 K7 Host Clock
Select Jumper
1
Auto detect
(default)
K
7
7
-
4
0
0
G
N
K
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7
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4
0
0
G
N
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Range
130-160 MHz
161-191 MHz
200-248 MHz
100-129 MHz
1
100MHz
50
O
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l
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M
a
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