10
Hardware Setup
P54C/P55C Series CPUs Settings (Continued)
1 2 3 4 5 6
ON
External• : 60MHz
Ratio•
: 2.0x
P54CÐ120MHz
1 2 3 4 5 6
ON
External• : 66MHz
Ratio•
: 2.0x
P54CÐ133MHz
(default)
External• : 60MHz
Ratio•
: 2.5x
P54CÐ150MHz
External• : 66MHz
Ratio•
: 2.5x
P54CÐ166MHz
External• : 60MHz
Ratio•
: 3.0x
P54CÐ180MHz
External• : 66MHz
Ratio•
: 3.0x
P54CÐ200MHz
Single Voltage
3.52V
(default)
External• : 66MHz
Ratio•
: 2.5x
P55CÐ166MHz
(MMX)
CPU
Frequency Setting (SW1)
Voltage Setting
(JP30)
External• : 60MHz
Ratio•
: 3.0x
P55CÐ180MHz
(MMX)
External• : 66MHz
Ratio•
: 3.0x
P55CÐ200MHz
(MMX)
External• : 66MHz
Ratio•
: 3.5x
P55CÐ233MHz
(MMX)
DualVoltage
2.8V
(default)
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1
3
5
7
9
11
JP30
1
3
5
7
9
11
JP30
JP7 JP8 JP9 JP10
2-3 open 2-3
1-2
(default)
2-3 open 2-3
1-2
(default)
Note:
1. The voltage setting for 3.52V and 2.8V are the same due to
the Smart Detect CPU Voltage function.
2. When using SDRAM on Intel CPUs, you have to use either
8ns or 10ns SDRAMs.