Lenovo NeXtScale nx360 M5, Installation And Service Manual, Page: 219 / 1022

• Do not use any tools or sharp objects to lift the locking levers on the microprocessor socket. Doing so
might result in permanent damage to the system board.
• Each microprocessor socket must always contain either a socket cover or a microprocessor and heat sink.
• Be sure to use only the installation tools provided with the new microprocessor to remove or install
the microprocessor. Do not use any other tool.
• When installing multiple microprocessors, open one microprocessor socket at a time to avoid damaging
other microprocessor socket contacts.
• The microprocessor installation tool has the microprocessor installed on the tool, and may have a
protective cover over the microprocessor. Do not use the tool, or remove the cover until you are
instructed to do so.
Note: Be sure to use the installation tool that comes with your microprocessor installation tool assembly.
• The server supports up to two multi-core microprocessors. See http://www.lenovo.com/ serverproven/
for a list of supported microprocessors.
• 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 fourth and sixth
fans. See “Installing a memory module” on page 154 for details about the installation sequence.
• Do not mix microprocessors with different cores in the same server.
• 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.ibm.com/support/ fixcentral.
• 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 210.
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.
The installation tool has two settings for installing two different sizes of microprocessors. The settings
that are marked on tool are “L” for smaller low core microprocessors, and “H” for larger high core
microprocessors. Installation tool supports the following families of microprocessors: E5-26xx, E5-46xx,
E5-26xx v2, E5-46xx v2.
To replace a microprocessor and heat sink, complete the following steps:
Chapter 5
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Removing and replacing components
205