The Mac Pro line is a series of Intel Xeon–based workstations computer made by Apple Inc. The Mac Pro, in most configurations and in terms of speed and performance, is the most powerful computer that Apple offers, and is one of three desktop computers in the current Mac lineup, the other two being the iMac and Mac Mini.
Until being revamped in 2013, the Mac Pro outwardly resembled the last version of the Power Mac G5, and had similar expansion capabilities. An Intel-based replacement for the PowerPC-based Power Mac G5 machines had been expected for some time before the Mac Pro was formally announced on August 7, 2006 at the annual Apple Worldwide Developers Conference (WWDC). The first Mac Pro was based on dual Dual-core Xeon Woodcrest processors. It was replaced by a dual Quad-core Xeon Clovertown model on April 4, 2007, and again on January 8, 2008 by a dual Quad-core Xeon Harpertown model. The 2012 Mac Pro was largely based on a model that was announced on July 27, 2010. It features Nehalem/Westmere architectures Intel Xeon processors. They offer options of up to 12 processing cores, up to four optional 2TB hard disk drives/512GB solid state drives and ATI Radeon HD 5770/5870 graphics card.
At the Apple Worldwide Developers Conference opening keynote on June 10, 2013, a redesigned Mac Pro was announced. In a radical departure from the previous case designs, which employed the standard, rectangular form factor, the new Mac Pro is shaped like a cylinder and takes up about one eighth the volume of previous models. Beyond form, the machine supports up to a 12-core Xeon CPU and four 1866 MHz DDR3 RAM modules, as well as dual GPUs and PCIe-based flash storage. While it is yet to be benchmarked or tested by the public, Apple claims that the new Mac Pro achieves twice the performance of the last model.