82598EB Datasheet, PDF (586/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Thermal Enhancements
8.16.5 Thermal Enhancements
One method frequently used to improve thermal performance is to increase the device surface area by
attaching a metallic heatsink to the component top. Increasing the surface area of the heatsink reduces
the thermal resistance from the heatsink to the air, increasing heat transfer.
8.16.5.1 Clearances
To be effective, a heatsink should have a pocket of air around it that is free of obstructions. Though
each design may have unique mechanical restrictions, the recommended clearances for a heatsink used
with are shown in Figure 8-11 and Figure 8-12.
The 8.0 mm heatsink is the recommended thermal solution for the 82598 for 6.5 W and lower.
However, if sufficient airflow is not available in your system, an active heat sink can be used with the
recommended clearances.
Figure 8-11. Heatsink Keep-Out Restrictions
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