Lenovo System x3500 M5 Type 5464 Installation And Service Manual page 101

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 technicians. Important: Always use the
microprocessor installation tool to install 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 multi-core microprocessors, which are designed for the LGA 2011 socket.
See http://www.lenovo.com/ serverproven/ for a list of supported microprocessors.
• Do not mix microprocessors with different cores in the same server.
• The first microprocessor must always be installed in microprocessor socket 1 on the system board.
• When one microprocessor is installed, the 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, the air baffle, and
fan 2. See "Memory module installation" on page 73 for details about the installation sequence.
• 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.
• Read the documentation that comes with the microprocessor to 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 http://www.lenovo.com/support.
• 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 "Thermal grease" on page 92.
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 Lenovo sales representative or Lenovo
reseller.
Installation tool has two settings for installing two different sizes of microprocessors. The settings
that are marked on the tool are "L" for smaller low core microprocessors, and "H" for larger high core
microprocessors.
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Chapter 2 Installing optional devices
85