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62 Installing System Components
6
Replace the cooling shrouds. See "Replacing the Cooling Shrouds" on page 50.
7
Close the system. See "Closing the System" on page 47.
Processors
Your system supports either two or four processors. You can add a third and fourth processor, or upgrade
processors to take advantage of future options in speed and functionality. Each processor and its
associated internal cache memory are contained in a land grid array (LGA) package that is installed in a
socket on the system board.
NOTICE: All processors must have the same frequency and core voltage.
Removing a Processor
1
Prior to upgrading your system, download and install the latest system BIOS version from
support.dell.com
.
2
Turn off the system, including any attached peripherals, and disconnect the system from the electrical
outlet.
3
Open the system. See "Opening the System" on page 46.
4
Remove the cooling shrouds. See "Removing the Cooling Shrouds" on page 49.
NOTICE: When you remove the heat sink, the possibility exists that the processor might adhere to the heat sink
and be removed from the socket. It is recommended that you remove the heat sink while the processor is warm.
NOTICE: Never remove the heat sink from a processor unless you intend to remove the processor. The heat sink is
necessary to maintain proper thermal conditions.
NOTICE: The processor and heat sink can become extremely hot. Be sure the processor has had sufficient time to
cool before handling.
5
Press the blue tab on the end of one of the heat-sink retention levers to disengage the lever, then lift
the lever 90 degrees. See Figure 3-11.