8GB 2x4GB PC3-8500 DDR3 1066 MHz Memory for Apple iMac A1225 Could be Samsung, Kingston, Hynix, Smart, Corsair, Elpida, Micron, or Nanya Warranty: LIFETIME WARRANTY WorldWide Shipping to most countries & USA Capacity: 4gb (2x3gb) - You receive 2 Stick of the 2gb SODIMMS for a total of 4gb