Upgrading Ram in the Dell Optiplex Gx620 - YouTube
512MB DDR2 Memory Upgrade for Dell OptiPlex GX620 (Small Form Factor) Desktop PC2-5300 Non-ECC DIMM RAM at Amazon.com
Dell Optiplex GX620 MT Intel Pentium D 3.0GHz CPU 2GB RAM No HDD No OS | eBay
Dell Optiplex GX620 MT Intel Pentium 4 2.80GHz CPU 2GB RAM No HDD No OS | eBay
CMS 4GB (2X2GB) DDR2 5300 667MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex Gx620 Dt/Mt/Sff - A88 at Amazon.com
USED: Dell Optiplex GX620 Tower Computer - 40g HDD, 2g RAM, Windows XP Professional x32, keyboard and mouse - Walmart.com
OFFTEK 512MB Replacement Memory RAM Upgrade for Dell OptiPlex GX620 Series (Desktop Mini-Tower and Small Form Factor) (DDR2-4200 - Non-ECC) Desktop Memory at Amazon.com