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MacBook Pro (Retina, 13-inch, Mid 2014) - Technical Specifications
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Amazon.com: Mid-2014 Apple MacBook Pro with 2.5GHz Intel Core i7 (15-inch, 16GB RAM, 512GB SSD Storage) (Renewed) : Electronics
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
Apple 15" MacBook Pro (Retina, Mid 2014) 2.2 GHz Core i7 MGXA2LL/A - Specifications - SellYourMac.com