support.dell.com System Memory Upgrade 1-1
Dell Precision™ WorkStation 620System Memory Upgrade
This document provides instructions for upgrading the Rambus inline memory mod-
ules (RIMMs) on the Dell Precision WorkStation 620. Dell Precision 620 systems
support dual, direct, Rambus dynamic random-access memory (RDRAM) modules.
These RIMMs feature error checking and correction (ECC).
NOTES: Dell recommends that only a technically knowledgeable person perform this
procedure.
Dell recommends that you read the entire procedure before you begin. You must also
be familiar with removing the system cover and locating the RIMMs.
Dell recommends that you print the contents of the system User’s Guide for
referencing important information that may not be available during critical procedures.
This document is available on your Dell Precision ResourceCD and can also be
accessed from the User’s Guides icon on your current desktop if you have not
reinstalled the operating system.

Upgrading the BIOS

You must upgrade the basic input/output system (BIOS) before you upgrade the
RIMMs. Otherwise, the existing BIOS may not recognize the new RIMMs, and the
system will not operate.
To upgrade the BIOS:
1. Download the BIOS update utility for the computer to be updated from the Dell
support website.
a. Go to http://support.dell.com.
If this is your first time to use this website, complete the one-time
registration.
b. Click Downloads for Your Dell.
c. Enter your Service Tag Number for the computer to be updated or select the
appropriate Dell™ system.