Axiom 16GB DDR3L-1600 Low Voltage SODIMM Kit (2 x 8GB) for Apple MF495G/A (PC3 12800) MF495G/A-AX Powerful performance - DDR3 nearly doubles the speed of DDR2 by offering faster data rates Low Power Consumption - DDR3 operates on a reduced supply voltage thanks to its efficient design Higher Bandwidth and Density - DDR3 allows better computer performance thanks to the fastest data transfer rates available Compatible Systems: Apple: iMac (21.5-inch, Mid 2014) Core i5 2.7GHz - 2.9GHz - Core i7 3.1GHz Compatible Systems: Apple: iMac (27-inch, Late 2013) Compatible Systems: Apple: iMac (Retina 5K, 27-inch, Late 2014) Compatible Systems: Apple: iMac Retina 5K 27-inch (Mid 2015)