Memory Master 4 GB (2 x 2GB) DDR2 800 MHz PC2-6400 Desktop DIMM Memory Modules MMD4096KD2-800 at Amazon.com
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
EMMCRAM 8GB (2 x 4GB) PC2-6400 DDR2-800 200PIN SoDIMM Laptop RAM Non-ECC Unbuffered Notebook Memory for Dell E6400,E6500, Inspiron 1545, M4400,E5500 at Amazon.com
8GB (2 X 4GB) Memory for Intel D5400XS Motherboard DDR2 FB DIMM (PARTS-QUICK Brand) at Amazon.com