Heatsink Orientations; Figure 12. Preferred Heatsink Orientation - Intel E7500 Design Manual

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6.3.1

Heatsink Orientations

To enhance the efficiency of the reference thermal solution, it is important for the designer to
orient the fins properly with respect to the mean airflow direction. Simulation and experimental
evidence have shown that the MCH heatsink thermal performance is enhanced when the fins are
aligned with the mean airflow direction (Figure 12). Aligning the heatsink 45° relative to the
airflow is acceptable but delivers reduced thermal performance.

Figure 12. Preferred Heatsink Orientation

®
Intel E7500 MCH Thermal and Mechanical Design Guidelines
Fin
Orientation
Reference Thermal Solutions
Parallel M ean
Correct
Air Flow
Direction
Orthogonal
Mean Air Flow
Direction
Incorrect
heatsk_orient
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