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Appendix A Physical Characteristics A-3
A.2.2 PICMG Board Cooling Requirements
TABLE A-1 provides the blade server board cooling requirements. No alarms are
triggered at any of the listed temperatures for the given airflow.
A.2.3 PICMG ARTM Cooling Requirements
TABLE A-2 provides the Pressure Drop vs. Flow Rate for the ARTM.
TABLE A-1 Airflow Requirements
Watts m
3
/min CFM
Power Level
25˚C 28˚C 40˚C 55˚C 25˚C 28˚C 40˚C 55˚C
140 0.045 0.045 0.91 0.91 16 16 32 32
205 0.045 0.045 0.91 0.91 16 16 32 32
210 0.045 0.045 0.91 0.91 16 16 32 32
TABLE A-2 ARTM Pressure Drop
Volumetric
Flow Rate
(CFM)
Volumetric
Flow Rate
(m
3
/min)
Pressure Drop
2 DIMMs (Pa)
Pressure Drop
2 DIMMs
(inches of H
2
O)
Pressure Drop
8 DIMMs (Pa)
Pressure Drop
8 DIMMs
(inches of H
2
O)
000000
17 0.48 11.16 0.05 11.16 0.05
24 0.68 18.61 0.08 18.61 0.08
30 0.85 28.53 0.12 31.01 0.13
34 0.96 34.73 0.14 38.45 0.16
42 1.19 48.38 0.2 54.58 0.22
45 1.27 59.05 0.24 64.5 0.26
48 1.36 64.5 0.26 71.95 0.29
51 1.44 71.95 0.29 79.39 0.32
54 1.53 79.39 0.32 86.83 0.35