Mechanical Enabling for the Intel Pentium 4 Processor in the 478-Pin Package

11
Reference Design Overview
Intel
®
845 MCH Enabling Assembly
 Clip Lever
 Generates preload
 Engages with clip frame
 Point contact to heatsink,
centered on die
 Clip Frame
 Carries preload to board
 Attaches to board using through-
hole mount anchors
 Maintains heatsink position on
die
 Heatsink
 Distribute the load evenly onto
the die