3 thermal grease syringe3 Place the heat sink onto the processor.4 Tighten one of the four screws to secure the heat sink to the system board.5 Tighten the screw diagonally opposite to the first screw you have tightened.NOTE: Do not over-tighten the heat sink retention screws when installing the heat sink. To prevent over-tightening,tighten the retention screw until resistance is felt, and stop after the screw is seated. The screw tension should not bemore than 6 in-lb (6.9 kg-cm).6 Repeat the procedure for the remaining two screws.Figure 61. Installing the heat sink1 retention screw (4) 2 heat sink3 processor socket 4 retention screw slot (4)Next steps1 Follow the procedure listed in the After working inside your system section.2 While booting, press F2 to enter System Setup and verify that the processor information matches the new system configuration.3 Run the system diagnostics to verify that the new processor operates correctly.Related linkSafety instructionsBefore working inside your systemAfter working inside your systemRemoving the cooling shroudRemoving the optional expansion card riserInstalling the optional expansion card riserInstalling the cooling shroudRemoving a processorPower supply units (PSU)Your system supports:• Two 495 W, 750 W, or 1100 W AC PSU modules• One cabled 450 W PSU module (non-redundant)Installing and removing system components 127
