Intel Q9450 Design Guidelines - Page 54
Core shoulder, traps clip in place
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Intel® Thermal/Mechanical Reference Design Information 5.7.2 Mechanical Interface to the Reference Attach Mechanism The attach mechanism component from the reference design can be used by other 3rd party cooling solutions. The attach mechanism consists of: A metal attach clip that interfaces with the heatsink core, see Appendix F Figure 66 and Figure 67 for the component drawings. Four plastic fasteners, see Figure 68, Figure 69, Figure 70, and Figure 71 for the component drawings. The clip is assembled to heatsink during copper core insertion, and is meant to be trapped between the core shoulder and the extrusion as shown in Figure 16. Figure 16. Reference Clip/Heatsink Assembly Clip Core shoulder traps clip in place The mechanical interface with the reference attach mechanism is defined in Figure 17 and Figure 18. Complying with the mechanical interface parameters is critical to generating a heatsink preload compliant with the minimum preload requirement provided in Section 2.1.2.2. Additional requirements for the reference attach mechanism (clip and fasteners) include: Heatsink/fan mass ≤ 550 g (i.e., total assembly mass, including clip and fasteners < 595 g Whole assembly center of gravity ≤ 25.4 mm, measured from the top of the IHS Whole assembly = Heatsink + Fan + Attach clip + Fasteners 54 Thermal and Mechanical Design Guidelines