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 :
Memory Card For Samsung DDR3 8G 4G 2G 1G 1066 1333 1600 PC3 Third Generation YUN | eBay
What is the difference between PC3-10600 and PC3-10666 RAMs? - Quora