8 cores, standard.  8-core processing was once reserved as a high-end option. Now it's at the heart of the Mac Pro line. This incredible power stems from all-new Quad-Core Intel Xeon "Harpertown" processors, featuring speeds up to 3.2GHz and 12MB of L2 cache per processor.

Blazing fast, up to 2x performance.  With its 8-core processing, advanced Xeon architecture, 1600MHz dual independent front-side buses, and 800MHz memory, the new Mac Pro delivers up to 2x greater application performance.

Configuration Options
— Two quad-core processors (8-core) up to 3.2GHz
— One quad-core processor at 2.8GHz
— Memory up to 32GB
— Upgraded graphics cards
— Hard drive storage up to 4TB
— Up to four SAS hard drives
— Mac Pro RAID Card
— Up to two SuperDrives
— AirPort Extreme
— PCI Express 2.0 graphics card slot
— + many more options