Zopsc DDR2 4GB RAM 800MHz Memory Module for AMD CPU Stable Fast Data Transmission 240PIN for High Anti-Interference and Antistatic for Desktop Computer, Plug and Play at Amazon.com
Kingston KVR667D2Q8F5/4G PC2-5300 4GB DDR2 RAM 667MHz FB-DIMM 240-Pin Server RAM ECC Memory at Amazon.com
4GB (1x4GB) DDR2 800MHz PC2-6400 Single Stick 200-pin SODIMM Laptop Memory RAM 2Rx8 at Amazon.com