Mac Pro - technical definition

Apple's professional workstation, which contains either four or eight cores. Packaged as a floor-standing tower, it is available with one or two Intel Quad-core Xeon CPU chips. Without additional display adapters, it can drive two 30" DVI monitors. The Mac Pro is a powerful series that supports up to 32GB of memory and 4TB of storage.

The First Intel Mac Towers
Mac Pro was the first family of tower-based Macintosh computers from Apple that were powered by Intel x86 chips rather than PowerPC. The Mac Pro superseded the Power Mac G5 series. See Macintosh models, Mactel and Power Mac.