Reliability; Thermal Considerations For Components - Intel D945PWM Technical Product Specification

Intel Desktop Board D945PWM Technical Product Specification
Table 31 provides maximum case temperatures for the 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 board.
Table 31.

Thermal Considerations for Components

Component
Intel Pentium 4 processor
Intel 82945P MCH
Intel 82801G ICH7
For information about
Intel Pentium 4 processor datasheets and specification updates

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 D945PWM board is
108,165 hours.
66
Maximum Case Temperature
For processor case temperature, see processor datasheets and
processor specification updates
o
103 C (under bias)
o
110 C (under bias, without heatsink)
o
99 C (under bias, with heatsink)
Refer to
Section 1.2, page 15