Dell Optiplex GX620 Desktop PC 500GB HDD Intel Pentium 4 Processor 4GB DDR2 Windows 7 Pro
Upgrading processor in the Dell Optiplex GX620 ( Tower) - YouTube
OFFTEK 1GB Replacement Memory RAM Upgrade for Dell OptiPlex GX620 Series (Desktop Mini-Tower and Small Form Factor) (DDR2-5300 - Non-ECC) Desktop Memory at Amazon.com