Thermal Considerations
VL-EPU-3311 Reference Manual
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Test Scenario 2: Dual Core EPU-3311-EBP + HDW-406 Heat Sink, with/without HDW-411
fan
As shown in Figure 31, running the test scenario with just the heat sink, the core temperature is
slightly above 100 ºC at maximum ambient temperature. This will be less in most applications
that require less than 90% CPU utilization. Adding the fan provides an additional 5-6 ºC of
margin. For long-term reliability, ensure the CPU cores are predominately running with their
temperatures below 100 ºC.
Figure 31. EPU-3311-EBP Dual Core Temperature Relative to Ambient Temperature
