8GB DDR3 1333MHz PC3-10600 512X64 204Pin SODIMM Memory for iMac 2011.
This memory is compatible with the following iMac models
21.5" i5 2.5GHz
21.5" i5 2.7GHz
21.5" i7 2.8GHz
27" i5 2.7GHz
27" i5 3.1GHz
27" i7 3.4Ghz
Works with Model Identifiers: iMac12,1 & iMac12,2
iMac 2011 Specifications:
Total number of slots: 4
Maximum memory/slot: 8GB
Install Pairs (2 at a time) for best performance
Maximum of 32GB Total Memory Supported(Except 21.5" i3 3.1GHz Education Model, which Supports up to 8.0GB total.)
One of the major brands like Crucial, Micron, Samsung, Kingston, Corsair, etc.
Note: Depending on availability, the shipped item's condition could be New, Used, Refurbished, Pulled or OEM.