3. Installing Thermal Sensor
The Thermal Sensor Connector (CN12 & CN1) provides you to use the thermal sensor to detect the CPU temperature of the components on the motherboard.
GND
Sensor
4. SW3 Select CPU Type
This motherboard supports DUAL processors for Intel PentiumII / Pentium!!!, and Celeron CPU (applied to PPGA package only, must lower than 300MHz). Please refer to the following table for detail. It is not recommended to change the default setting, unless the system fails to boot and you’re trying to troubleshoot.
5. SW1 Setting CPU FSB Frequency & Ratio
When you are using the Intel® engineer sample CPU with DX34/DX34Plus, the SW1 allows you select the CPU ratio from 2x to 9.5 x. You can adjust the SW1 to get the correct CPU working ratio and frequency.
ONOFF
1
SW1
Warning: We strongly recommend you do not overclocking your CPU and system for get more system reliability.
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| Bit1 |
| Bit2 |
| Bit3 |
| Bit4 |
| Ratio |
| Frequency |
| Frequency |
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| (FSB100) |
| (FSB133) |
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| On |
| On |
| On |
| On |
| X2 |
| 200 |
| 266 |
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| On |
| Off |
| On |
| On |
| X2.5 |
| 250 |
| 333 |
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| On |
| On |
| Off |
| On |
| X3 |
| 300 |
| 400 |
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1
OFF
ON
SW3
2 | 1 |
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| 2 | 1 |
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| ON |
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| ON | |||
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(Default)
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Processor CPU Package | Configuration | ||
PentiumII |
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Single Processor Pentium!!! | All | Default | |
Celeron |
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PentiumII | All | Default | |
Dual Processor Pentium!!! | |||
PPGA | Set the SW3 to OFF | ||
Celeron | |||
Celeron | Not Supported | ||
|
| On |
| Off |
| Off |
| On |
| X3.5 |
| 350 |
| 466 |
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| On |
| On |
| On |
| Off |
| X4 |
| 400 |
| 533 |
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| On |
| Off |
| On |
| Off |
| X4.5 |
| 450 |
| 600 |
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| On |
| On |
| Off |
| Off |
| X5 |
| 500 |
| 667 |
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| On |
| Off |
| Off |
| Off |
| X5.5 |
| 550 |
| 733 |
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| Off |
| On |
| On |
| On |
| X6 |
| 600 |
| 800 |
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| Off |
| Off |
| On |
| On |
| X6.5 |
| 650 |
| 866 |
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| Off |
| On |
| Off |
| On |
| X7 |
| 700 |
| 933 |
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| Off |
| Off |
| Off |
| On |
| X7.5 |
| 750 |
| 1000 |
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| Off |
| On |
| On |
| Off |
| X8 |
| 800 |
| 1066 |
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| Off |
| Off |
| On |
| Off |
| X8.5 |
| 850 |
| 1133 |
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| Off |
| On |
| Off |
| Off |
| X9 |
| 900 |
| 1200 |
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| Off |
| Off |
| Off |
| Off |
| X9.5 |
| 950 |
| 1266 |
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