8GB 2 X 4GB DDR2 PC2-6400 800MHZ 240Pin AMD DIMM Hgih Density Desktop Memory at Amazon.com
parts-quick 8GB (2 X 4GB) Memory for Dell OptiPlex 960 DDR2 800MHz PC2-6400 240 pin Desktop DIMM RAM at Amazon.com
4GB [2x2GB] DDR2-800 (PC2-6400) RAM Memory Upgrade Kit for The Apple MacBook 13.3" 2.13GHz Core 2 Duo 5,2 MC240LL/A (Genuine A-Tech Brand) at Amazon.com
Crucial 2GB Single DDR2 800MHz (PC2-6400) CL6 SODIMM 200-Pin Notebook Memory Module CT25664AC800 at Amazon.com