Apple iMac - 16GB 2x8GB Kit DDR3 1333MHz 204Pin SoDIMM
Crucial 16GB DDR3 1333 Unbuffered Memory for Mac - Newegg.com
Crucial 8GB Kit (2 x 4GB) DDR3L-1333 SODIMM Memory for Mac | CT2K4G3S1339M | Crucial.com
16GB [4x4GB] DDR3-1333 RAM Memory Upgrade Kit for The Apple iMac 12,2 (27-inch, 2.7GHz, MC813LL/A) Quad-Core Intel Core i5 (Genuine A-Tech Brand) at Amazon.com
8GB 2X 4GB PC3-10600 DDR3 1333Mhz Memory Apple iMac (21.5 and 27-inch, Mid 2011) | eBay
A-Tech 8GB 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 Module at Amazon.com
Apple iMac 2011 Memory 4GB DDR3 1333MHz PC3-10600 204-Pin
4GB PC10600 DDR3 1333MHz SO-DIMM Memory Compatible with 2011 MacBook Pro, Mid 2010/2011 21.5" & 27" iMac Models, 2011 Mac Mini (OWC1333DDR3S4GB) at Amazon.com
NEMIX RAM 16GB (2x8GB Upgrade) DDR3-1333 PC3-10600 204-Pin SODIMM Memory for Apple MacBook Pro Early/Late 2011, iMac Mid 2010 27 inch 4-Core, iMac Mid 2011 21.5/27” , Mac Mini Mid 2011 at Amazon.com
OWC 16.0GB (4 x 4GB) 1333MHz 204-Pin DDR3 SO-DIMM PC3-10600 CL9 Memory Compatible with iMac (OWC1333DDR3S16S) at Amazon.com
4GB DDR3 1333MHz RAM ~ for Apple iMac Mid 2010 & Mid 2011 Memory | eBay