Intel Core2 Duo Desktop Processor, Intel Pentium Processor, and Intel Pentium 4 Processor 6x1 Sequence

ATX Thermal/Mechanical Design Information
Thermal and Mechanical Design Guidelines 61
Figure 19. Intel
®
RCFH-4 Reference Design – Exploded View
Wire Guard
Fan Assy.
Extrusion
Clip
Fastener
Wire Guard
Fan Assy.
Extrusion
Clip
Fastener
Development vendor information for the Intel RCFH-4 Reference Solution is provided
in Appendix H.
6.6 Reference Attach Mechanism
6.6.1 Structural Design Strategy
Structural design strategy for the Intel RCFH-4 Reference Solution is to minimize
upward board deflection during shock to help protect the LGA775 socket.
The reference design uses a high clip stiffness that resists local board curvature under
the heatsink, and minimizes, in particular, upward board deflection (
Figure 20). In
addition, a moderate preload provides initial downward deflection.