Install a processor and heat sink

Make sure to install heat sink based on processor’s configurations:

	One-processor configuration	Two-processor configuration
185-watt or lower	Processor 1: Standard heat sink Processor 2: N/A	Processor 1: Standard heat sink Processor 2: Performance heat sink
Greater than 185-watt, less or equal to 205-watt	Processor 1: Performance heat sink Processor 2: N/A	Processor 1: Standard heat sink Processor 2: Performance heat sink
Greater than 205-watt	Processor 1: Performance heat sink Processor 2: N/A	Processor 1: N/A Processor 2: N/A

The following illustration shows the components of the PHM.

Figure 1. PHM components

1 Heat sink	9 Clips to secure processor in carrier
2 Heat sink triangular mark	10 Processor ejector handle
3 Processor identification label	11 Carrier triangular mark
4 Nut and wire bail retainer	12 Processor heat spreader
5 Torx T30 nut	13 Thermal grease
6 Anti-tilt wire bail	14 Processor contacts
7 Processor carrier	15 Processor triangular mark
8 Clips to secure carrier to heat sink

Procedure

1. Make preparations for this task.
   1. Record the processor identification label.
      • If you are replacing a processor and reusing the heat sink, remove the processor identification label from the heat sink and replace it with the new label that comes with the replacement processor.
      • If you are replacing a heat sink and reusing the processor, remove the processor identification label from the old heat sink and place it on the new heat sink in the same location.
        Note

        If you are unable to remove the label and place it on the new heat sink, or if the label is damaged during transfer, write the processor serial number from the processor identification label on the new heat sink in the same location as the label would be placed using a permanent marker.
2. Install the processor in the new carrier.
   Note

   • If you are replacing the processor and reusing the heat sink, use the new carrier that comes with the new processor.
   • If you are replacing the heat sink and reusing the processor, and if the new heat sink comes with two processor carriers, make sure to use the same type of carrier as the one you discarded.

   1. Make sure the handle on the carrier is in the closed position.
   2. Align the processor on the new carrier so that the triangular marks align; then, insert the marked end of the processor into the carrier.
   3. Hold the inserted end of the processor in place; then, pivot the unmarked end of the carrier down and away from the processor.
   4. Press the processor and secure the unmarked end under the clip on the carrier.
   5. Carefully pivot the sides of the carrier down and away from the processor.
   6. Press the processor and secure the sides under the clips on the carrier.
      Note

      To prevent the processor from falling out of the carrier, keep the processor-contact side up and hold the processor-carrier assembly by the sides of the carrier.

   Figure 2. Installation of the processor carrier
   
   
3. Apply the thermal grease.
   • If you are replacing the heat sink and reusing the processor, a new heat sink comes with thermal grease and you do not need to apply new thermal grease.
     Note

     To ensure the best performance, check the manufacturing date on the new heat sink and make sure it does not exceed two years. Otherwise, wipe off the existing thermal grease and apply new thermal grease.
   • If you are replacing the processor and reusing the heat sink, do the following steps to apply thermal grease:
     1. If there is any old thermal grease on the heat sink, wipe off the thermal grease with an alcohol cleaning pad.
     2. Carefully place the processor and carrier in the shipping tray with the processor-contact side down. Make sure the triangular mark on the carrier is oriented in the shipping tray as shown below.
     3. Apply the thermal grease on the top of the processor with syringe by forming four uniformly spaced dots, while each dot consists of about 0.1 ml of thermal grease.

   Figure 3. Thermal grease application with processor in shipping tray
   
   
4. Assemble the processor and heat sink.
   1. Align the triangular mark on the heat sink label with the triangular mark on the processor carrier and processor.
   2. Install the heat sink onto the processor-carrier.
   3. Press the carrier into place until the clips at all four corners engage.
   4. Visually inspect to make sure that there is no gap between the processor carrier and the heat sink.
      Figure 4. Assembling the PHM with processor in shipping tray
      
      
      
      
5. Install the heat sink support bracket to the system board if performance heat sink is to be installed.
   1. Lower the heat sink support bracket onto the system board.
   2. Tighten the two screws to secure the heat sink support bracket.
   Figure 5. Heat sink support bracket replacement
   
   
6. For one-processor configuration, install the 1U standard heat sink or 1U performance heat sink into processor socket 1.
   Important

   • Do not touch the contacts on the bottom of the processor.
   • Keep the processor socket clean from any object to prevent possible damages.
   1. Rotate the anti-tilt wire bails inward.
   2. Align the triangular mark and four Torx T30 nuts on the PHM with the triangular mark and threaded posts of the processor socket; then, insert the PHM into the processor socket.
   3. Rotate the anti-tilt wire bails outward until they engage with the hooks in the socket.
   4. Fully tighten the Torx T30 nuts 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.
      Note

      For reference, the torque required for the screws to be fully tightened/removed is 10+/- 2.0 lbf-in, 1.1+/- 0.2 N-m.

      Attention

      To prevent damage to components, make sure to follow the indicated tightening/loosening sequence.
      Figure 6. PHM location for one-processor configuration
      
      

      Figure 7. Installation of a 1U Performance PHM for one-processor configuration
      
      

      Figure 8. Installation of a 1U Standard PHM for one-processor configuration
      
      
7. For two-processor configuration, install the 1U standard heat sink into processor socket 1 and 1U performance heat sink into processor socket 2.
   Important

   • Do not touch the contacts on the bottom of the processor.
   • Keep the processor socket clean from any object to prevent possible damages.
   1. Rotate the anti-tilt wire bails inward.
   2. Align the triangular mark and four Torx T30 nuts on the PHM with the triangular mark and threaded posts of the processor socket; then, insert the PHM into the processor socket.
   3. Rotate the anti-tilt wire bails outward until they engage with the hooks in the socket.
   4. Fully tighten the Torx T30 nuts 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.
      Note

      For reference, the torque required for the screws to be fully tightened/removed is 10+/- 2.0 lbf-in, 1.1+/- 0.2 N-m.

      Attention

      To prevent damage to components, make sure to follow the indicated tightening/loosening sequence.
      Figure 9. PHM location for two-processor configuration
      
      

      Figure 10. Installation of a 1U Standard PHM for two-processor configuration
      
      

      Figure 11. Installation of a 1U Performance PHM for two-processor configuration