iMac computers running e, where the ultra-thin design, beautiful wide screen, high-performance and graphics, 1 TB of storage and OS X Mountain Lion. LED display to the iMac's IPS display provides a very bright and sharp image in a natural color reproduction. Anti-reflective screen offers a crisp picture with a wide viewing angle. fourth generation of the performance of an Apple iMac computer performance guarantees of the fourth-generation Intel i5 quad-core processor.