Amazon.com: Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3 1333MHz PC3-10600 CL9 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac(Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) MAC RAM Upgrade :
16GB (4 X 4GB) DDR3 1333MHz PC3-10600 240-pin Memory RAM DIMM by NEMIX RAM at Amazon.com
32GB (1x32GB) DDR3-1333MHz PC3-10600 ECC LRDIMM 4Rx4 1.35V Load Reduced Server Memory by NEMIX RAM at Amazon.com