CMS - 8GB 2X4GB RAM Memory for Apple iMac Core i5 3.1 27-Inch (Mid-2011) MC814BZ/A

CMS 8GB DDR3 SDRAM Memory Module - 8 GB (2 x 4 GB) - DDR3 SDRAM - 1333 MHz DDR3-1333/PC3-10600 - 204-pin SoDIMM CMS 8GB DDR3 SDRAM Memory Module - 8 GB (2 x 4 GB) - DDR3 SDRAM - 1333 MHz DDR3-1333/PC3-10600 - 204-pin SoDIMM