118 Removing and Installing Parts
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Microprocessor• Installation guidelines
•Upgrading the microprocessor(s)
Installation Guidelines
•A VRM must be installed for each microprocessor installed. To locate
the VRM and microprocessor sockets, see "System Board
Components" or the interior service label.
•For single-processor operations, the processor must be installed in
socket 0 and the VRM must be installed in connector 0. Processor
socket 1 and VRM connector 1 must be empty. To locate these
components, see "System Board Components" or the interior service
label.
•For dual-processor operations, both processor sockets and both VRM
connectors must be populated.
•For dual-processor operations, the two processors and the two VRMs
must be identical. If the processors do not match, you receive a system
message, the diagnostic lights indicate an error, and the computer may
not startup. If the VRMs do not match, the diagnostic lights will
indicate an error.
•If installing a Dell processor upgrade kit for either single or dual
processors, remove and discard the original VRM(s). Then install the
VRM(s) from the upgrade kit. If you are not installing a processor
upgrade kit from Dell, reuse the original VRM(s).
•If you are upgrading your microprocessor, keep your original
microprocessor heat sink and securing clips for future trouble-
shooting.
Upgrading the Microprocessor(s)
NOTE: Dell recommends that only a technically knowledgeable person
perform this procedure.
CAUTION: The processor can get very hot during normal
operation. Be sure that the processor has had sufficient time to
cool before you touch it.