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If you are instructed to return the microprocessor, follow all packaging instructions, and use any packaging
materials for shipping that are supplied to you.
Installing a microprocessor and heat sink
Use this information to install a microprocessor and heat sink.
The following notes describe the type of microprocessor that the server supports and other information that
you must consider when you install a microprocessor and heat sink:
• Microprocessors are to be installed only by trained service technicians.
Important: Always use the microprocessor installation tool to remove a microprocessor. Failing to use
the microprocessor installation tool may damage the microprocessor sockets on the system board. Any
damage to the microprocessor sockets may require replacing the system board.
• The server supports up to two IntelXeon multi-core microprocessors. See
info/x86servers/serverproven/compat/us/
• Do not install an Intel Xeon™ 5500 series microprocessor and an Intel Xeon™ 5600 series microprocessor
in the same server.
• Do not mix dual-core, quad-core, and six-core microprocessors in the same server.
• The first microprocessor must always be installed in microprocessor socket 1 on the system board.
• When one microprocessor is installed, a heat sink filler is not required for microprocessor socket 2,
however, the microprocessor 2 air baffle and the DIMM air baffle must be installed to provide proper
system cooling.
• Do not remove the first microprocessor from the system board when you install the second
microprocessor.
• When you install the second microprocessor, you must also install additional memory and the sixth fan.
See
"Installing a memory module" on page 430
• To ensure proper server operation when you install an additional microprocessor, use microprocessors
that have the same QuickPath Interconnect (QPI) link speed, integrated memory controller frequency, core
frequency, power segment, internal cache size, and type.
• Mixing microprocessors of different stepping levels within the same server model is supported.
• When mixing microprocessors with different stepping levels within the same server model, you do not
have to install the microprocessor with lowest stepping level and features in microprocessor socket 1.
• Both microprocessor voltage regulator modules are integrated on the system board.
• If you have to replace a microprocessor, call for service.
• Read the documentation that comes with the microprocessor, so that you can determine whether you
have to update the server firmware. To download the latest level of server firmware and other code
updates for your server, go to
• The microprocessor speeds are automatically set for this server; therefore, you do not have to set any
microprocessor frequency-selection jumpers or switches.
• If the thermal-grease protective cover (for example, a plastic cap or tape liner) is removed from the heat
sink, do not touch the thermal grease on the bottom of the heat sink or set down the heat sink. For more
information about applying or working with thermal grease, see
Note: Removing the heat sink from the microprocessor destroys the even distribution of the thermal
grease and requires replacing the thermal grease.
• To order an additional optional microprocessor, contact your IBM marketing representative or authorized
reseller.
System x3550 M3Problem Determination and Service Guide
502
for a list of supported microprocessors.
for details about the installation sequence.
http://www.ibm.com/supportportal/
http://www.ibm.com/systems/
.
"Thermal grease" on page
506.
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