parts-quick 16GB 2 x 8GB Memory for iMac 27-inch (Late 2013) Core i5 i7 1600MHz DDR3 (PC3-12800) SODIMM RAM 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