The oldest out of the three the MacBook came out in 2006 and has sold 18.21 million copies since. The most popular version is the MacBook Pro. When the first MacBook came out it was a success. 13.3-inch (diagonal) LED-backlit display with IPS technology; 2560x1600 native resolution at 227 pixels per inch with support for millions of colours. 8-core CPU with 4 performance cores and 4 efficiency cores 8-core GPU 16-core Neural Engine.