32GB 4x8GB PC3-10600 204 PIN DDR3-1333 Mhz Memory for Apple iMac 27" Mid 2011 Could be Samsung, Kingston, Hynix, Smart, Corsair, Elpida, Micron, or Nanya Warranty: LIFETIME WARRANTY WorldWide Shipping to most countries & USA Capacity: 32gb (4x8gb) - You receive 4 Stick of the 8gb SODIMMS for a total of 32gb