Dell OptiPlex GX50 Systems Service Manual page 67

a. Remove the memory module closest to the heat-sink assembly.
b. Pull down on the toggle clip lever until you can unhook the ends of the clip from the tabs on each side of the ZIF
socket.
c. Remove the clip from the socket, and then lift the heat sink from the microprocessor.
Removing the Securing Clip
1 ZIF socket tab
2 Toggle lever
4. Remove the microprocessor chip from the socket.
Removing the Microprocessor Chip