Dell PowerEdge M620 Owner's Manual page 254

Figure 3-49. Installing and Removing a Heat Sink (PowerEdge M605)
4
1 heat sink
3 socket CPU2
4 Remove the heat sink.
Set the heat sink upside down on the work surface to avoid contaminating
the thermal grease.
5 Use a clean, lint-free cloth to remove any thermal grease from the surface
of the processor shield.
254
Installing Blade Components
3
1
2 screws (4)
4 socket CPU1
2