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Chapter 2 Product Overview
ETX-PVR Reference Manual 17
Thermal/Cooling Requirements
The CPU, I/O Hub, and voltage regulators are the main sources of heat on the board.The ETX-PVR is
designed to operate at the maximum speeds of the N455 (1.66GHz) or N525 (1.80GHz) CPUs and requires
a cooling solution. ADLINK offers two cooling solutions, as well as a heat spreader platform on which to
build a cooling solution (see Table 2-7 for descriptions of the cooling solution options.) Figure 2-12 provides
the height measurements from the bottoms of the ETX connectors to the tops of the cooling components.
Figure 2-12. Stack Heights of Cooling Assemblies
NOTE The overall system design must keep the ICs within their operating temperature
specifications.
Table 2-7. ADLINK Optional Cooling Solutions
Cooling Solution Description
Passive Heat Sink
(without fan)
Qualified to maintain optimal performance up to +70°C.
Active Heat Sink
(with fan)
Qualified to maintain optimal performance up to +85°C.
Heat Spreader Provides a simple thermal platform on which to build a cooling solution.
NOTE All heights are given in inches.