CP605
System Considerations
ID 25095, Rev. 07
© 2004 Kontron Modular Computers GmbH
Page 6 - 7
2509
5.07.UG.VC.041005/14244
8
Figure 6-2: Desktop Pentium 4 Temperature Vs. Airspeed Graph
As individual processor characteristics vary as well as the system environment of the CP605,
the information contained in Figures 6-1 and 6-2 must be viewed as a guide and not as an
absolute specification. It is the responsibility of the system integrator to ensure that system
requirements are specified accordingly.
An airflow of 1.0 m/s is a typical value for a standard Kontron ASM rack (6U CompactPCI rack
with a 1U cooling fan tray). Newer ASMs from Kontron will have an airspeed of 2.0 m/s or more.
For other racks or housings the available airflow will differ. The maximum ambient operating
temperature must be recalculated and/or measured for such environments. For the calculation
of the maximum ambient operating temperature, the processor junction (case) temperature
must never exceed the specified limit for the involved processor type.
1.0 1.5 2.0 2.5 3.0
20
30
40
50
60
°C
T
ambient
P4 2.0 GHz
P4 2.4 GHz
Airspeed [m/s]
1)
2)
1) By fixed airspeed of n.n, the maximum al-
lowable ambient air temperature is:
2) By a maximum ambient air temperature
of nn°C, the minimum airspeed is:
