A-Tech 4GB RAM Stick for Dell XPS 8700, 8500 - DDR3 1600MHz PC3-12800 Non-ECC DIMM Memory Upgrade Module at Amazon.com
4GB Stick for IBM-Lenovo ThinkCentre M Series M78 Small Form Factor M78 Tower M93p Small Form Factor M93p Tower. DIMM DDR3 Non-ECC PC3-12800 1600MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com