Processing
8-core: Two 2.26GHz Quad-Core Intel Xeon 5500 series processor
Next-generation Intel microarchitecture
8MB of fully shared L3 cache per processor
Integrated memory controller
Turbo Boost dynamic performance (up to 3.33GHz on 8-core 2.93GHz system)
Hyper-Threading technology for up to 16 virtual cores
128-bit SSE4 SIMD engine
64-bit data paths and registers
Optimized for energy efficiency

Memory
Eight memory slots (four per processor) supporting up to 32GB of main memory using 1GB, 2GB, or 4GB DIMMs

Graphics and displays
Double-wide, 16-lane PCI Express 2.0 graphics slot with one of the following graphics cards installed:
NVIDIA GeForce GT 120 with 512MB of GDDR3 memory, PCI Express 2.0, one Mini DisplayPort, and one dual-link DVI port
ATI Radeon HD 4870 with 512MB of GDDR5 memory, PCI Express 2.0, one Mini DisplayPort, and one dual-link DVI port

Communications
Two independent 10/100/1000BASE-T Ethernet (RJ-45) interfaces with support for jumbo frames
Bluetooth 2.1 + Enhanced Data Rate (EDR)
Optional AirPort Extreme Wi-Fi card with 802.11n2 (based on an IEEE 802.11n draft specification); IEEE 802.11a/b/g compatible

Storage
Four 3.5-inch cable-free, direct-attach hard drive bays with built-in independent 3Gb/s Serial ATA channels; four internal hard drive carriers included
Up to 4TB of internal storage3 in hard drive bays 1 through 4 using hard drives in the following capacities:
640GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
1TB Serial ATA 3Gb/s, 7200 rpm, 32MB cache
Optional Mac Pro RAID Card with 512MB cache and 72-hour cache battery backup
18x SuperDrive with double-layer support (DVD±R DL/DVD±RW/CD-RW)
Writes DVD+R and DVD-R discs at up to 18x speed
Writes DVD+R DL and DVD-R DL discs at up to 8x speed
Writes DVD+RW discs at up to 8x speed
Writes DVD-RW discs at up to 6x speed
Reads DVDs at up to 18x speed
Writes CD-R and CD-RW discs at up to 32x speed
Reads CDs at up to 32x speed
One open optical drive bay for optional second SuperDrive

Connections and audio
Four FireWire 800 ports (two on front panel, two on back panel)
Five USB 2.0 ports (two on front panel, three on back panel)
Two USB 2.0 ports on included keyboard
Front-panel headphone minijack and internal speaker
Optical digital audio input and output TOSLINK ports
Analog stereo line-level input and output minijacks

PCI Express expansion
Three open full-length PCI Express expansion slots5
One PCI Express 2.0 x16 slot
Two PCI Express 2.0 x4 slots
All slots provide mechanical support for 16-lane cards
300W combined maximum for all PCI Express slots

Software
Mac OS X v10.5 Leopard (includes iTunes, Time Machine, Quick Look, Spaces, Spotlight, Dashboard, Mail, iChat, Safari, Address Book, QuickTime, iCal, DVD Player, Photo Booth, Front Row, Xcode Developer Tools)
iLife ’09 (includes iPhoto, iMovie, iDVD, iWeb, and GarageBand)

In the box
Mac Pro
Power cord
Apple Keyboard with Numeric Keypad and Mighty Mouse
USB keyboard extension cable
Install/restore DVDs
Printed and electronic documentation