Apple C Grade Laptop MacBook Pro ME664LL/A-C Intel Core i7 2.40 GHz 8 GB Memory 256 GB HDD 15.4 Mac OS X v10.8 Mountain Lion Operating System: Mac OS X v10.8 Mountain Lion CPU: Intel Core i7 2.4 GHz Screen: 15.4 Memory: 8 GB Storage: 256 GB Number of Cores: Quad-core Processor