User Guide

Mac Pro Take Apart — Processor Heatsinks 72
Note: If you are replacing a processor heatsink with a new heatsink, do not reapply thermal
grease. The new heatsink comes with thermal grease already in place, covered by a cap over the
bottom of the heatsink. Before installing the heatsink, remove the cap.
Replacement Note: If you are replacing either the upper or lower processor heatsink with a new
heatsink, apply the enclosed gasket to the top of the heatsink, as illustrated below.
Replacement Note: If you are replacing the lower processor (CPU B) heatsink with a new
heatsink, install the enclosed bumpers on either side of the heatsink, as illustrated below. Do not
add bumpers to the heatsink for the upper processor (CPU A).