Dell Optiplex GX620 LGA 775/Socket T Foxconn LS-36 MicroATX w/ CPU & 4x256MB RAM 5704327453338 | eBay
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