512MB DDR2 Memory Upgrade for Dell OptiPlex GX620 (Ultra SFF) PC2-5300 Non-ECC DIMM RAM at Amazon.com
2GB (2X1GB) Dell OptiPlex GX620 Series RAM Memory DDR2 at Amazon.com
2GB (2X1GB) Dell OptiPlex GX620 Series RAM Memory DDR2 at Amazon.com
Dell Optiplex GX620 MT Intel Pentium D 3.0GHz CPU 2GB RAM No HDD No OS | eBay
Refurbished Dell OptiPlex GX620 SFF Pentium D Dual-Core 3.00GHz 2GB...
Dell Optiplex GX620 Intel Pentium 4 2.80GHz CPU 1GB RAM NO HDD NO OS RS232 | eBay
Upgrading Ram in the Dell Optiplex Gx620 - YouTube
Dell Optiplex GX620 LGA 775/Socket T Foxconn LS-36 MicroATX w/ CPU & 4x256MB RAM 5704327453338 | eBay
OFFTEK 1GB Memoria RAM di ricambio per Dell OptiPlex GX620 Series (Desktop Mini-Tower and Small Form Factor) (DDR2-6400 - Non-ECC) Memoria Desktop : Amazon.it: Informatica