Installing a second microprocessor and heat sink
Use this information to install a second microprocessor and heat sink.
About this task
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:
v 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.
v To confirm that the server supports the adapter that you are installing, see
http://www.ibm.com/systems/info/x86servers/serverproven/compat/us/.
v Microprocessors are to be installed only by trained service technicians.
v The server supports up to two Intel Xeon multi-core microprocessors.
v Do not install an Intel Xeon
™
5500 series microprocessor and an Intel Xeon
™
5600 series microprocessor in the same server.
v Do not mix dual-core, quad-core, and six-core microprocessors in the same
server.
v The first microprocessor must always be installed in microprocessor socket 1 on
the system board.
v When one microprocessor is installed, a heat sink filler is not required for
microprocessor socket 2, however, the microprocessor 2 air baffle, the sixth fan,
and the DIMM air baffle must be installed to provide proper system cooling.
v Do not remove the first microprocessor from the system board when you install
the second microprocessor.
v When you install the second microprocessor, you must also install additional
memory and the sixth fan. See “Installing a memory module” on page 54 for
details about the installation sequence.
v 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.
v Mixing microprocessors of different stepping levels within the same server
model is supported.
v 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.
v Both microprocessor voltage regulator modules are integrated on the system
board.
v If you have to replace a microprocessor, call for service.
v Read the documentation that comes with the microprocessor to determine
whether you have to update the UEFI firmware. To download the most current
level of UEFI firmware for the server, go to http://www.ibm.com/support/
fixcentral/.
v The microprocessor speeds are automatically set for this server; therefore, you
do not have to set any microprocessor frequency-selection jumpers or switches.
100 IBM System x3550 M3 Type 4254 and 7944: Installation and User's Guide