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Installing a second microprocessor and heat sink

Use this information to install a second 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.
  • To confirm that the server supports the adapter that you are installing, see Lenovo ServerProven website.
  • Microprocessors are to be installed only by trained service technicians.
  • The server supports up to two IntelXeon multi-core microprocessors.
  • 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, the sixth fan, 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 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.
  • If you have to replace a microprocessor, call for service.
  • 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 the Fix Central website.
  • 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 details, see the information about thermal grease in the Problem and Determination Service Guide.
    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.

To install an additional microprocessor and heat sink, complete the following steps:

  1. Read the safety information that begins on Safety and Installation guidelines.
  2. Turn off the server and peripheral devices and disconnect the power cords and all external cables.
  3. Remove the cover (see Removing the cover).
  4. Locate microprocessor socket 2 on the system board.
  5. Remove the microprocessor 2 air baffle (see Removing the microprocessor 2 air baffle).
  6. Install the microprocessor:
    1. Press down and out on the release lever on microprocessor socket 2 and lift up the microprocessor release lever until it stops in the fully open position.
    2. Lift the hinged microprocessor bracket frame into an open position and remove the microprocessor dust cover, tape, or label from the surface of the microprocessor socket, if one is present. Store the dust cover in a safe place.
      Attention
      When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For details about handling these devices, see Handling static-sensitive devices.
      Figure 1. Dust cover removal
      Dust cover removal
    3. Locate the microprocessor installation tool that comes with the new microprocessor.
      Note
      The microprocessor installation tool assembly comes with the microprocessor and microprocessor cover attached to the tool. The microprocessor comes protected between the tool and the microprocessor cover.
      Figure 2. Microprocessor alignment
      Microprocessor alignment
    4. Remove the microprocessor installation tool assembly from the package.
      Note
      Do not rotate the handle on the tool until you are ready to install the microprocessor into the microprocessor socket.
    5. Remove the cover from the bottom of the microprocessor installation tool. Press both microprocessor cover release tabs outward (in opposite directions as shown in the illustration) and remove the microprocessor installation tool with the microprocessor attached.
      Figure 3. Microprocessor cover removal
      Microprocessor cover removal
    6. Carefully align the microprocessor installation tool over the microprocessor socket.
      Attention
      The microprocessor fits only one way on the socket. You must place a microprocessor straight down on the socket to avoid damaging the pins on the socket. The pins on the socket are fragile. Any damage to the pins may require replacing the system board.
      Figure 4. Microprocessor installation
      Microprocessor installation
    7. Twist the handle on the microprocessor tool counterclockwise to insert the microprocessor into the socket.
      Figure 5. Installation tool handle adjustment
      Installation tool handle adjustment
    8. Close the microprocessor bracket frame.
    9. Carefully close the microprocessor release lever to the closed position to secure the microprocessor in the socket.
  7. Install the heat sink:
    1. Remove the plastic protective cover from the bottom of the heat sink.
    2. Align the heat sink on top of the microprocessor with the thermal grease side down.
      Attention
      Do not touch the thermal grease on the bottom of the heat sink after you remove the plastic cover. Touching the thermal grease will contaminate it. See Thermal grease for more information.
      Figure 6. Thermal grease
      Thermal grease
    3. Lower the rear flange of the heat sink into the opening in the retainer bracket and press down firmly on the front of the heat sink until it is seated securely.
      Figure 7. Heat sink installation
      Heat sink installation
    4. Rotate the heat-sink release lever to the closed position and hook it underneath the lock tab.
  8. Reinstall the microprocessor 2 air baffle (see Installing the microprocessor 2 air baffle).
  9. Install the sixth fan (see Installing a hot-swap fan assembly).

If you have other devices to install or remove, do so now. Otherwise, go to Completing the installation.

  • Thermal grease
    The thermal grease must be replaced whenever the heat sink has been removed from the top of the microprocessor and is going to be reused or when debris is found in the grease.