Powered by an Intel Core i5 1.4 GHz fourth generation processor, the Apple MacBook Air 11.6-inch Laptop delivers high performance. The built-in 128 GB HDD takes care of all your storage needs. The 4 GB memory module ensures a lag-free performance. This MacBook comes with an option of installing the Apple Mac OS X 10.4 Tiger or Apple Mac OS X 10.9 Mavericks. It comes in a silver exterior casing.