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MS-5169 version 2.1
1.CPU Core Speed Derivation Procedure
a: The Jumper S1 (4,5, & 6) is used to adjust the CPU clock
frequency.
0 = Open, 1 = Short
|
SW1
|
CPU
|
|
4
|
5
|
6
|
Clock
|
|
0
|
0
|
0
|
100
|
|
0
|
0
|
1
|
75*
|
|
0
|
1
|
0
|
83
|
|
0
|
1
|
1
|
66
|
|
1
|
0
|
0
|
95
|
|
1
|
0
|
1
|
50
|
|
1
|
1
|
0
|
75**
|
|
1
|
1
|
1
|
60
|
* AGP = 60/PCI = 30
** AGP = 75/PCI = 37.5
2. The Jumper S1 (1,2, & 3) is used to set the Core/Bus (Fraction)
ratio of the CPU. The actual core speed of the CPU is the Host Clock
Frequency multiplied by the Core/Bus ratio.
0 = Open, 1 = Short
|
1
|
2
|
3
|
CPU
|
|
|
0
|
0
|
0
|
1.5/3.5
|
Intel
AMD
Cyrix
IDT
|
|
0
|
1
|
0
|
3x
|
|
1
|
0
|
0
|
2x
|
|
1
|
1
|
0
|
2.5x
|
|
0
|
0
|
1
|
5.5x
|
AMD
K6/K6 2
|
|
0
|
1
|
1
|
5x
|
|
1
|
0
|
1
|
4x
|
|
1
|
1
|
1
|
4.5x
|
2. CPU Voltage Setting: S2
|
V I/O
|
Vcore
|
S2
|
|
1
|
2
|
3
|
4
|
|
3.45
|
3.6
|
ON
|
ON
|
ON
|
ON
|
|
3.45
|
3.5
|
ON
|
ON
|
ON
|
OFF
|
|
3.45
|
3.4
|
ON
|
ON
|
OFF
|
ON
|
|
3.45
|
3.3
|
ON
|
ON
|
OFF
|
OFF
|
|
3.45
|
3.2
|
ON
|
OFF
|
ON
|
ON
|
|
3.45
|
3.1
|
ON
|
OFF
|
ON
|
OFF
|
|
3.45
|
3.0
|
ON
|
OFF
|
OFF
|
ON
|
|
3.45
|
2.9
|
ON
|
OFF
|
OFF
|
OFF
|
|
3.45
|
2.8
|
OFF
|
ON
|
ON
|
ON
|
|
3.45
|
2.7
|
OFF
|
ON
|
ON
|
OFF
|
|
3.45
|
2.6
|
OFF
|
ON
|
OFF
|
ON
|
|
3.45
|
2.5
|
OFF
|
ON
|
OFF
|
OFF
|
|
3.45
|
2.4
|
OFF
|
OFF
|
ON
|
ON
|
|
3.45
|
2.3
|
OFF
|
OFF
|
ON
|
OFF
|
|
3.45
|
2.2
|
OFF
|
OFF
|
OFF
|
ON
|
|
3.45
|
2.1
|
OFF
|
OFF
|
OFF
|
OFF
|
3. CPU Single or Voltage Setting: JV1
This jimper is used for setting the CPU single or Dual voltage.
|
JV1
|
CPU
|
|
SHORT
|
SHORT
|
OPEN
|
Single Voltage CPU
|
|
SHORT
|
SHORT
|
OPEN
|
|
OPEN
|
SHORT
|
SHORT
|
Dual Voltage CPU
|
|
OPEN
|
SHORT
|
SHORT
|
4. CPU Speed and Voltage Setting: S1, S2 and JV1
To set the speed and voltage of the CPU, you must know the specifications
of your CPU (always ask the vendor for CPU specifications). Then
refer to table 5(Intel Prossors), Table 6(Cyrix Processors), and
Table 7(AMD Processors) for proper setting.
5. Intel Processors: Intel Processors
a. Intel Pentium Processor
|
CPU Type
|
CPU Voltage & Speed
|
| VI/O |
Vcore |
JV1
|
S2
|
S1
|
|
1
|
2
|
3
|
1
|
2
|
3
|
4
|
5
|
6
|
| 100MHz |
3.38
|
Short
|
Short
|
Open
|
1 Short
2 Short
3 Open
4 Open
|
OFF
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
| 133MHz |
3.52
|
1 Short
2 Short
3 Short
4 Open
|
ON
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
| 166MHz |
ON
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
| 200MHz |
OFF
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
b. Intel Pentium Processor with MMX Technology
| 166MHz |
3.3-3.45
|
2.8
|
Open
|
Short
|
Short
|
1 Open
2 Short
3 Short
4 Short
|
ON
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
| 200MHz |
OFF
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
| 233MHz |
OFF
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
Note: If you encounter a CPU with different voltage, just go to Section
2 and look for proper voltage settings
BACK TO TOP
6. Cyrix Processors: Cyrix 6x86 processor
uses PR to rate the speed of their processors based on Intel Pentium
processor core speed. For example PR150 (120MHz)has 150Mhz core speed
of Intel Pentium processor but has 120MHz core speed in Cyrix. Cyrix
6x86 processor should always use a more powerful fan (ask vendor for
proper cooling fan).
Cyrix 6x86/6x86L Processors:
|
CPU Type
|
CPU Voltage and Speed
|
|
VI/O
|
Vcore
|
JV1
|
S2
|
S1
|
|
1
|
2
|
3
|
1
|
2
|
3
|
4
|
1
|
2
|
3
|
4
|
5
|
6
|
|
6x86
PR166
|
3.5
|
Short
|
Short
|
Open
|
ON
|
ON
|
ON
|
OFF |
ON
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
|
6x86L
PR200
|
3.3-3.45
|
2.8
|
Open
|
Short
|
Short
|
OFF
|
ON
|
ON
|
ON
|
ON
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
|
6x86
PR200
|
3.5
|
Short
|
Short
|
Open
|
ON
|
ON
|
ON
|
OFF
|
ON
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
|
6x86L
PR200
|
3.3-3.45
|
2.8
|
Open
|
Short
|
Short
|
OFF
|
ON
|
ON
|
ON
|
ON
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
Cyrix 6x86MX Processor
|
CPU Type
|
CPU Voltage and Speed
|
|
VI/O
|
Vcore
|
JV1
|
S2
|
S1
|
|
1
|
2
|
3
|
1
|
2
|
3
|
4
|
1
|
2
|
3
|
4
|
5
|
6
|
|
PR200 (66x2.5)
|
3.3 - 3.45
|
2.9
|
Open
|
Short
|
Short
|
ON
|
OFF
|
OFF
|
OFF |
ON
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
|
PR233 (75x2.5)
|
ON |
ON
|
OFF
|
OFF
|
OFF
|
ON
|
|
PR233 (66x3)
|
OFF |
ON
|
OFF
|
OFF
|
ON
|
ON
|
|
PR233 (83x2)
|
ON |
OFF
|
OFF
|
OFF
|
ON
|
OFF
|
| PR266 (75x3) |
OFF |
ON |
ON |
ON |
ON |
OFF |
| PR266 (66x3.5) |
OFF |
OFF |
OFF |
OFF |
ON |
ON |
| PR266 (83x2.5) |
ON |
ON |
OFF |
OFF |
ON |
OFF |
If you encounter a CPU with different voltage, just go to Section
2 and look for the proper voltage settings.
BACK TO TOP
7. AMD Processor: AMD K5 processor uses
PR to rate the speed of their processors based on Intel Pentium processor
core speed. For example PR133 (100MHz) has 133 MHz core speed of Intel
Pentium processor but has 100MHz core speed in AMD K5 processor.
AMD K5 Processor
|
CPU Type
|
CPU Voltage and Speed
|
|
VI/O
|
Vcore
|
JV1
|
S2
|
S1
|
|
1
|
2
|
3
|
1
|
2
|
3
|
4
|
1
|
2
|
3
|
4
|
5
|
6
|
|
PR200 (66x2.5)
|
3.52
|
Short
|
Short
|
Open
|
ON
|
ON
|
ON
|
OFF |
OFF
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
|
PR233 (75x2.5)
|
ON |
OFF
|
OFF
|
OFF
|
ON
|
ON
|
|
PR233 (66x3)
|
ON |
ON
|
OFF
|
OFF
|
ON
|
ON
|
b: AMD K6 Processor
|
CPU Type
|
CPU Voltage and Speed
|
|
VI/O
|
Vcore
|
JV1
|
S2
|
S1
|
|
1
|
2
|
3
|
1
|
2
|
3
|
4
|
1
|
2
|
3
|
4
|
5
|
6
|
| 166MHz |
3.3 - 3.45
|
2.9
|
Open
|
Short
|
Short
|
ON
|
OFF
|
OFF
|
OFF |
ON
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
| 200MHz |
OFF |
ON
|
OFF
|
OFF
|
ON
|
ON
|
| 233MHz |
3.3 - 3.45 |
3.2 |
ON |
OFF |
ON |
ON |
OFF |
OFF
|
OFF
|
OFF
|
ON
|
ON
|
| 266MHz |
3.3-3.45 |
2.2 |
OFF |
OFF |
OFF |
ON |
ON |
OFF
|
ON
|
OFF
|
ON
|
ON
|
| 300MHz |
ON |
ON |
ON |
OFF |
ON |
ON |
| K6 2 300MHz |
OFF |
ON |
OFF |
OFF |
OFF |
OFF |
K6 2
333MHz |
OFF |
OFF |
OFF |
ON |
OFF |
OFF |
K6 2
350MHz |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
BACK TO TOP
8. IDT Processor
|
CPU Type
|
CPU Voltage and Speed
|
|
VI/O
|
Vcore
|
JV1
|
S2
|
S1
|
|
1
|
2
|
3
|
1
|
2
|
3
|
4
|
1
|
2
|
3
|
4
|
5
|
6
|
|
200MHz
|
3.3
|
Short
|
Short
|
Open
|
ON
|
ON
|
OFF
|
OFF |
OFF
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
|
225MHz
|
OFF |
ON
|
OFF
|
OFF
|
OFF
|
ON
|
BACK TO TOP |