Intel D925XBC User Manual

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Technical Reference 
Table 39 provides maximum case temperatures for the Desktop Board D925XCV/D925XBC 
components that are sensitive to thermal changes.  The operating temperature, current load, or 
operating frequency could affect case temperatures.  Maximum case temperatures are important 
when considering proper airflow to cool the Desktop Board D925XCV/D925XBC. 
Table 39.  Thermal Considerations for Components 
Component  
Maximum Case Temperature 
Intel Pentium 4 processor 
For processor case temperature, see processor datasheets and 
processor specification updates 
Intel
 
82925X MCH  
99 
o
C (under bias)
 
Intel 82801FR ICH6-R 
110 
o
C (under bias)
 
 
For information about  
Refer to 
Intel Pentium 4 processor datasheets and specification updates 
Section 1.4, page 19 
2.13 Reliability 
The Mean Time Between Failures (MTBF) prediction is calculated using component and 
subassembly random failure rates.  The calculation is based on the Bellcore Reliability Prediction 
Procedure, TR-NWT-000332, Issue 4, September 1991.  The MTBF prediction is used to estimate 
repair rates and spare parts requirements. 
The MTBF data is calculated from predicted data at 55 ºC.  The MTBF for the D925XCV and 
D925XBC boards is 105,577 hours. 
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