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microprocessor option kit and dispose of the old one. The new heat sink has grease already applied for both
the rst and second microprocessors.
For optimal performance, follow these microprocessor installation rules:
1. When two microprocessors are installed, both must have the same core voltage and core speed.
2. When only one microprocessor is installed, it must be in the socket labeled CPU0. The other socket
must be kept empty.
3. Always install the microprocessor rst into the CPU0 socket, and then install another microprocessor
into the CPU1 socket if you want to install two microprocessors.
To install the microprocessor, do the following:
1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all
power cords from electrical outlets and disconnect all cables that are connected to the server.
2. Remove the server cover. See “Removing the server cover” on page 19.
3. Remove the heat sink assembly. See “Removing the heat sink assembly” on page 52.
4. Press down and push the small handle outward on the microprocessor socket to lift the handle to
the open position.
Figure 50. Lifting the handle
5. Gently press the retainer of the microprocessor socket to open it.
Figure 51. Opening the retainer
62 ThinkServer Installation and User Guide