Komputerbay 8GB (2 X 4GB) DDR2 DIMM (240 pin) 800MHZ PC2-6400 PC2-6300 8 GB KIT with Crown Series Heatspreaders for Extra Cooling CL 5-5-5-12 at Amazon .com
8GB [2x4GB] DDR2-800 (PC2-6400) RAM Memory Upgrade Kit for The Dell Latitude E6400 (Genuine A-Tech Brand) at Amazon.com