IBM Flex System x440 Compute Node Installation And Service Manual page 559

v This component can be installed as an optional device or as a CRU. The
installation procedure is the same for the optional device and the CRU.
v The optional microprocessors that IBM supports are limited by the capacity and
capability of the compute node. Any microprocessors that you install must have
the same specifications as the microprocessors that came with the compute node.
v A socket cover and heat-sink filler or a microprocessor and heat sink must
always be installed on microprocessor sockets 1, 3, and 4. Microprocessor socket
2 will only have a socket cover when a microprocessor is not install. If the
compute node has only one microprocessor, it must be installed in
microprocessor socket 1.
v If you are installing a second microprocessor, make sure that the microprocessors
are identical.
v Before you install a new microprocessor, download and install the most current
level of UEFI code (see "Updating firmware and device drivers" on page 23).
v When you install a second microprocessor, you might have to install additional
memory or redistribute memory across the DIMM connectors. See "Installing a
DIMM" on page 502.
v The microprocessor installation tool might become worn after several uses. Make
sure that the tool can hold the microprocessor securely if you are reusing an
existing microprocessor installation tool. Do not return the tool with other parts
that you are returning.
v If you are installing a second microprocessor, the microprocessor option kit
comes with a microprocessor installation tool that you must use when you
install a microprocessor. The microprocessor installation tool comes with the
replacement microprocessor installed on it and a cover over the microprocessor.
v If you are replacing a defective microprocessor, the CRU kit comes with one
installation tool with the replacement microprocessor installed on it and a cover
over the microprocessor, and one empty installation tool without a cover.
v If you are replacing a defective microprocessor, you must obtain the following
items for use during the replacement procedure (see Chapter 5, "Parts listing,
Types 7917 and 2584," on page 51):
– Alcohol wipes
– Thermal grease
Chapter 7. Installing, removing, and replacing compute node components
547