" The Mac Pro "Eight Core" is powered by two 3.2 GHz Quad Core Xeon X5482 processors. Compared to the original Mac Pro that it replaced, the Mac Pro "Eight Core" uses a more advanced architecture with faster and more efficient processors with larger level 2 caches, a more advanced vector engine, faster frontside buses (1.6 GHz instead of 1.33 GHz), faster memory (800 MHz instead of 667 MHz), support for optional faster Serial Attached SCSI drives (with the installation of the Mac Pro RAID card), and two 16-lane PCIe 2.0 slots. This computer is ready for the highest-end application, and is expandable to suit the needs of even the most demanding of users. "