New 16GB 4x4GB Memory RAM For Apple iMac DDR3-1333 MHz Could be Samsung, Kingston, Hynix, Smart, Corsair, Elpida, Micron, or Nanya Warranty: LIFETIME WARRANTY WorldWide Shipping to most countries & USA Capacity: 16gb (4x4gb) - You receive 4 Stick of the 4gb SODIMMS for a total of 16gb