2Gb (2X1Gb) Memory RAM Compatible with Dell Optiplex Gx520 Series Desktop By CMS A100 - Computer Memory Solutions
4GB (2x2GB) RAM Memory Compatible with Dell OptiPlex GX520 Series Desktop | eBay
Refurbished: Dell OptiPlex 380 Desktop Computer Core 2 Duo 3.0GHz 8GB DDR3 RAM 500GB HD DVD-RW Microsoft Windows 7 Professional 64-Bit Desktop Computers - Newegg.ca
Dell OptiPlex - Wikipedia
Dell Optiplex GX520 Memory / RAM
Dell Optiplex GX520 for Restoration, Computers & Tech, Desktops on Carousell