<ul><li>Halogen Free; ROHS</li><li>Speed: PC3-10600S DDR3 1333MHz</li><li>Form Factor: 204 pin SODIMM</li><li>Capacity: 8GB 2 x 4GB Kit</li><li>Warranty: Lifetime</li></ul><br><br>8GB Total. Two 4GB PC3-10600S 204 pin SODIMM DDR3 1333MHz. COMPATIBLE WITH DDR3 versions of: iMac- Summer 2010 21.5 inch 3.06GHz Intel Core i3 21.5 inch 3.20GHz Intel Core i3 27 inch 3.20GHz Intel Core i3 27 inch 3.60Ghz Intel Core i5 27 inch 2.8GHz Quad-Core Intel Core i5 27 inch 2.93GHz Quad-Core Intel Core i7

8GB 2X 4GB Memory Compatible with Apple iMac 27 inch 3.20GHz Intel Core i3 DDR3 PC3-10600 204 pin 1333MHz SODIMM RAM (PARTS-QUICK Brand)