Best Deal from Amazon.com : https://www.amazon.com/gp/product/B007HAXJ7C?tag=chriskressera-20
8GB Kit 4GBx2 Upgrade for a Apple iMac 31GHz Intel Core i5 27inch DDR3 Mid 2011
Product Description :
204-pin SODIMM
DDR3-1333
DDR3 PC3-10600 Unbuffered NON-ECC DDR3-1333 15V 512Meg x 64
The only brand of memory upgrade available directly from a DRAM manufacturer tested to meet the most stringent industry specifications
Install it yourself in about 15 minutes The same top-quality memory that the worlds largest computer manufacturers install in the systems they sell
