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Install a processor-heat-sink module

The processor and heat sink are installed together as part of a processor-heat-sink-module (PHM) assembly. PHM installation requires a Torx T30 driver.

If you are installing multiple options relating to the system board, the PHM installation should be performed first.
  • Intel Xeon SP Gen 2 are supported on the system board with part number 01PE846. If you use the system board with part number 01GV276, 00MX552, 01PE248, or 01PE933, update your system firmware to the latest level before installing a Intel Xeon SP Gen 2. Otherwise, the system cannot be powered on.

  • Each processor socket must always contain a cover or a PHM. When removing or installing a PHM, protect empty processor sockets with a cover.

  • Do not touch the processor socket or processor contacts. Processor-socket contacts are very fragile and easily damaged. Contaminants on the processor contacts, such as oil from your skin, can cause connection failures.

  • Remove and install only one PHM at a time. If the system board supports multiple processors, install the PHMs starting with the first processor socket.

  • Do not allow the thermal grease on the processor or heat sink to come in contact with anything. Contact with any surface can compromise the thermal grease, rendering it ineffective. Thermal grease can damage components, such as electrical connectors in the processor socket. Do not remove the grease cover from a heat sink until you are instructed to do so.

  • To ensure the best performance, check the manufacturing date on the new heat sink and make sure it does not exceed 2 years. Otherwise, wipe off the existing thermal grease and apply the new grease onto it for optimal thermal performance.

  • PHMs are keyed for the socket where they can be installed and for their orientation in the socket.

  • See Lenovo ServerProven website for a list of processors supported for your server. All processors on the system board must have the same speed, number of cores, and frequency.

  • Before you install a new PHM or replacement processor, update your system firmware to the latest level. See Update the firmware.

  • Installing an additional PHM can change the memory requirements for your system. See Memory module installation rules for a list of processor-to-memory relationships.

  • Optional devices available for your system might have specific processor requirements. See the documentation that comes with the optional device for information.

  • For some important information about system board, processor, and heat sink, refer to Important information for system board, processor, and heat sink.

Complete the following steps to install a PHM.

Watch the procedure

A video of this procedure is available at YouTube

  1. Remove the processor socket cover, if one is installed on the processor socket, by placing your fingers in the half-circles at each end of the cover and lifting it from the system board.
  2. Install the processor-heat-sink module on the system board.
    Figure 1. Installing a PHM
    PHM installation
    1. Align the triangular marks and guide pins on the processor socket with the PHM; then, insert the PHM into the processor socket.
      To prevent damage to components, make sure that you follow the indicated tightening sequence.
    2. Fully tighten the Torx T30 captive fasteners in the installation sequence shown on the heat-sink label. Tighten the screws until they stop; then, visually inspect to make sure that there is no gap between the screw shoulder beneath the heat sink and the processor socket. (For reference, the torque required for the nuts to fully tighten is 1.4 - 1.6 newton-meters, 12 — 14 inch-pounds).
After installing the PHM option:
  1. Remove the fan filler and install two new system fans that comes with the processor option kit. See Install a system fan.

    The Cascade Lake processor does not come with a system fan. If you have installed a Cascade Lake processor, ensure that you have ordered the ThinkSystem SR630 FAN Option Kit and install it.
  2. If there are memory modules to install, install them. See Install a memory module.