These excerpts taken from the AAPL 10-K filed Dec 29, 2006.
The Mac Pro desktop computer is targeted at business and professional users and is designed to meet the performance, expansion, and networking needs of the most demanding Macintosh user. Introduced in August 2006, the Mac Pro features two Intel Xeon dual-core processors running up to 3.0GHz, each with 4MB of shared Level 2 cache and independent 1.33GHz front-side buses, 667MHz fully buffered memory, and a 256-bit wide memory architecture. The Mac Pro also features a direct attach storage solution for snap-in installation of up to four 750GB Serial ATA hard drives for a total of 3TB of internal storage and support for two optical drives to simultaneously read and/or write to CDs and DVDs. Every Mac Pro includes three full-length PCI Express expansion slots and one double-wide PCI Express graphics slot to support double-wide graphics cards. The Mac Pro also includes dual Gigabit Ethernet ports, optical digital input and output ports, analog audio input and output ports, and multiple FireWire 400, FireWire 800 and USB 2.0 ports.
The Mac Pro desktop