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Set the System Bus Speed, AGP and PCI clocks: JP6 to JP12
Jumpers JP6, JP7, JP8, JP9, JP10, JP11, and JP12 are used to set the mainboard timing
for the system bus, the AGP clock, and the PCI clock. The table below shows the
settings that are available.
Speed Settings MHz
CPU
AGP
CLK
CLK
112
74
100
66
95/90
63
83
55
75
75
68
68
66
66
Shaded row indicates the default values.
Set the Memory Bus Speed: JP9 and JP10
As a default, the memory bus uses the same clock speed as the CPU clock. If you are
using slower memory that does not comply with the PC-100 standard, you can use JP9
and JP10 to make the memory bus the same speed as the AGP clock. The setting of
JP9 and JP10 must be the same (Run CPU clock or Run AGP clock), otherwise the
system will be fail.
JP9 Function
DRAM run CPU CLK
DRAM run AGP CLK
JP10Function
DRAM run CPU CLK
DRAM run AGP CLK
Set CPU Core Voltage: JPW1
This mainboard supports a variety of CPUs with various core voltages. Use JPW1 to
set the core voltage that is required by your CPU.
Core Voltage
Pins 1-2
3.5V
Short
3.4V
Short
3.3V
Short
3.2V
Short
3.1V
Short
3.0V
Short
2.9V
Short
PCI
JP6
JP7
JP8
CLK
37
1-2
2-3
33
1-2
1-2
31
2-3
1-2
27
2-3
2-3
37
1-2
2-3
34
2-3
2-3
33
1-2
1-2
Jumper Cap
Short Pins 1-2
Short pins 2-3
Jumper Cap
Short pins 2-3
Short Pins 1-2
Pins 3-4
Pins 5-6
Short
Short
Short
Short
Short
Open
Short
Open
Open
Short
Open
Short
Open
Open
Short Pin Settings
JP9
JP10
JP11
2-3
1-2
2-3
2-3
1-2
2-3
2-3
1-2
2-3
1-2
1-2
2-3
1-2
1-2
2-3
2-3
1-2
2-3
1-2
1-2
2-3
3
JP9
2
Default
1
3
JP10
2
Default
1
Pins 7-8
Short
Open
Short
JPW1
Open
Default
Short
2.8V
Open
Short
JP12
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3
2-3
1-2
2-3
1-2
2-3
1-2
1-2
3-4
5-6
7-8
8
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