16GB Kit 2 x 8GB Memory for Apple iMac Retina 5K 27 inch (Late 2014) Core i5 / i7 DDR3L 1600MHz PC3L-12800 SODIMM RAM (PARTS-QUICK BRAND) Capacity: 16GB Kit 2 X 8GB Form Factor: 204 pin SODIMM Speed: PC3L-12800 1600MHz 1.35v Low Voltage Low Power Halogen Free; ROHS; Warranty: Lifetime