This version of the 13.3-inch MacBook Pro with Retina display, model ME865LL/A, features a 2.4 GHz Core i5 dual-core processor, 256 GB of flash storage, and 8 GB of onboard RAM. With its entirely flash-based architecture, the MacBook Pro with Retina display makes everything you do incredibly fast and responsive — starting up takes seconds, apps launch quickly, even navigating the desktop feels incredibly fluid. The key is the new PCle-based flash storage, which provides faster read and write performance — up to 60 percent faster than the previous-generation MacBook Pro. And flash storage is extremely energy efficient, which means your MacBook Pro also has the ability to stay in standby mode for up to a month, without plugging in. It's powered by OS X Mavericks, the world's most advanced operating system and built to bring out the best in your Mac.