Reliability; Thermal Considerations For Components; Mtbf Calculations - Intel D865PERLX Specification

Intel Desktop Board D865PERC/D865PESO Technical Product Specification
Table 39 provides maximum case temperatures for the Desktop Board D865PERC/D865PESO
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 D865PERC/D865PESO.
Table 39.

Thermal Considerations for Components

Component
Intel Pentium 4 processor
Intel 82865PE MCH
Intel 82801EB ICH5
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. Table 40 lists the MTBF calculations.
Table 40.

MTBF Calculations

Board
Desktop Board D865PERC with 10/100 Mbits/sec LAN subsystem
Desktop Board D865PERC with Gigabit (10/100/1000 Mbits/sec) LAN subsystem
Desktop Board D865PESO with 10/100 Mbits/sec LAN subsystem
Desktop Board D865PESO with Gigabit (10/100/1000 Mbits/sec) LAN subsystem
80
Maximum Case Temperature
For processor case temperature, see processor datasheets and
processor specification updates
o
99 C (under bias)
o
115 C (under bias)
Refer to
Section 1.3, page 17
MTBF
98,383 hours
97,895 hours
101,425 hours
100,823 hours