Silicon Power Hynix IC Compatible for Apple DDR3 DDR3L 16GB (2x8GB) RAM 1600MHz (PC3 12800) 204 pin CL11 1.35V Non ECC Unbuffered SODIMM Laptop Notebook Memory RAM Module Upgrade at Amazon.com
Patriot Viper 3 Series, Black Mamba, DDR3 8GB (2 x 4GB) 1600MHz Dual Channel Kit (PV38G160C9K) at Amazon.com
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Integral RAM 8GB DDR3 1600MHz Desktop PC Memory at Amazon.com