A-Tech 16GB (2x8GB) RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
HP A6967A 1GB DDR Memory Quad 4 x 256MB Dimms at Amazon.com
Samsung 512MB PC2700 CL2.5 DDR Memory M470L6524BT0-CB3 at Amazon.com