Mac Pro (Early 2008) Take Apart — Processor Heatsinks for 2.8 and 3.0 GHz Processors 76
Preparing a New Heatsink for Installation
If you are replacing a processor heatsink with a new heatsink, complete steps 1 and 2 below.
Apply the top gasket included in the parts box to the top of the heatsink.1.
If you are replacing the 2. lower processor heatsink with a new heatsink, install the bumper
included in the parts box on the side of the heatsink.
Note: Do not apply thermal grease to a new heatsink. It comes with thermal grease already in
place, covered by a cap over the bottom of the heatsink. Before installation, remove the cap.