4GB KIT (4 x 1GB) for Dell Optiplex Series GX270 (Desktop and MiniTower). DIMM DDR Non-ECC PC3200 400MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
2GB 2X1GB RAM Memory for Dell OptiPlex GX270 SF (533MHz Front Side Bus) DDR DIMM 184pin PC2700 333MHz Black Diamond Memory Module Upgrade - Walmart.com