OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
32GB (2 x 16GB) DDR3 800MHz PC3-6400 240-PIN ECC Registered DIMM (RDIMM) Memory RAM KIT for Servers/WORKSTATIONS/MOTHERBOARDS (4 Rank KIT CHIPKILL) at Amazon.com