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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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