Dell PowerApp 220 Microprocessor Upgrade Installation Guide - Page 3

Upgrading the Microprocessor or Installing a Secondary Microprocessor To take advantage of future options in speed and functionality, you can add secondary microprocessors or replace either the primary or secondary microprocessors in your Dell™ system. NOTICE: The secondary microprocessors must be of the same type and speed as the primary microprocessor. Each microprocessor and its associated level 2 (L2) cache memory are contained in a Pin Grid Array (PGA) package that is installed in a zero insertion force (ZIF) socket on the system board. The following subsection describes how to install or replace the microprocessor in either the primary or secondary microprocessor connectors. Adding or Replacing a Microprocessor In addition to the ZIF socket for the primary microprocessor on the system board, there may be other ZIF sockets to accommodate secondary microprocessors. The secondary microprocessors must have the same operating frequency as the primary microprocessor. The following items are included in the microprocessor upgrade kit: • A microprocessor chip • A heat sink • A retention clip • A voltage regulator module (VRM), used if adding a second processor 1 Turn off the system, including any peripherals, and disconnect the power cable from the electrical outlet. 2 Open the system doors. For instructions, see "Checking Inside the System" in your system's Installation and Troubleshooting Guide. NOTICE: See "Protecting Against Electrostatic Discharge" in the safety instructions in the System Information document. 3 If you are upgrading an existing microprocessor, remove the heat sink retention clip that secures the heat sink to the microprocessor, press down firmly on the tab on the retention clip, and then remove the clip from the heat sink. Refer to your system information label on the system cover for heat sink retention clip information. Microprocessor Upgrade Installation Guide 1-1