Processing

• 8-core: Two 2.8GHz, 3.0GHz or 3.2GHz Quad-Core Intel Xeon 5400 series processors
• Quad-core: One 2.8GHz Quad-Core Intel Xeon 5400 series processor
• Enhanced Intel Core microarchitecture
  • 12MB of L2 cache per processor (each pair of cores shares 6MB)
  • 128-bit SSE4 SIMD engine
  • 64-bit data paths and registers
  • Energy efficiency optimisation
• 1600MHz, 64-bit dual independent frontside buses

Memory

• 800MHz DDR2 ECC fully buffered DIMM (FB-DIMM) memory
• Eight FB-DIMM slots on two memory riser cards (four slots per card) supporting up to 32GB of main memory
• 256-bit-wide memory architecture

Graphics and displays

• Double-wide, 16-lane PCI Express 2.0 graphics slot with one of the following graphics cards installed:
  • ATI Radeon HD 2600 XT with 256MB of GDDR3 memory and two dual-link DVI ports
  • NVIDIA GeForce 8800 GT with 512MB of GDDR3 memory and two dual-link DVI ports
  • NVIDIA Quadro FX 5600 with 1.5GB of GDDR3 memory, two dual-link DVI ports and one stereo 3D port
  
• Multiple graphics card configurations including two, three or four ATI Radeon HD 2600 XT cards
• 300W for up to four PCI Express graphics cards
• Support for up to eight 30-inch displays¹
• Support for digital resolutions up to 2560 by 1600 pixels
• Support for analogue resolutions up to 2048 by 1536 pixels
• DVI to VGA adapter included
• Dual-display support for extended desktop and video mirroring modes

Communications

• Two independent 10/100/1000BASE-T Ethernet (RJ-45) interfaces with support for jumbo frames
• Bluetooth 2.0 + Enhanced Data Rate (EDR) up to 3Mb/s
• Optional 802.11n AirPort Extreme wireless networking²
• Optional external Apple USB Modem (RJ-11)

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 using hard drives in the following capacities:
  • Hard drive bay 1
    • 320GB Serial ATA 3Gb/s, 7200 rpm, 8MB cache
    • 500GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 750GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 1TB Serial ATA 3Gb/s, 7200 rpm, 32MB cache
    • 300GB Serial Attached SCSI 3Gb/s, 15,000 rpm, 16MB cache⁴
  • Hard drive bay 2
    • 500GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 750GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 1TB Serial ATA 3Gb/s, 7200 rpm, 32MB cache
    • 300GB Serial Attached SCSI 3Gb/s, 15,000 rpm, 16MB cache⁴
  • Hard drive bay 3
    • 500GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 750GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 1TB Serial ATA 3Gb/s, 7200 rpm, 32MB cache
    • 300GB Serial Attached SCSI 3Gb/s, 15,000 rpm, 16MB cache⁴
  • Hard drive bay 4
    • 500GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 750GB Serial ATA 3Gb/s, 7200 rpm, 16MB cache
    • 1TB Serial ATA 3Gb/s, 7200 rpm, 32MB cache
    • 300GB Serial Attached SCSI 3Gb/s, 15,000 rpm, 16MB cache⁴
• Optional Mac Pro RAID card with 256MB cache and 72-hour cache battery backup⁵
• 16x SuperDrive with double-layer support (DVDR DL/DVDRW/CD-RW)
  • Writes DVD+R and DVD-R discs at up to 16x speed
  • Writes DVD+R DL and DVD-R DL discs at up to8xspeed
  • Writes DVD+RW discs at up to8x speed
  • Writes DVD-RW discs at up to 6x speed
  • Reads DVDs at up to 16x 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

Electrical and environmental requirements

• ENERGY STAR configurations available⁶
• Line voltage: 100-120V AC or 200-240V AC (wide-range power supply input voltage)
• Frequency: 50Hz to 60Hz single phase
• Current: Maximum of 12A (low-voltage range) or 6A (high-voltage range)
• Operating temperature: 10 to 35 C (50 to 95 F)
• Storage temperature: (-40 to 47 C (-40 to 116 F)
• Relative humidity: 5% to 95% noncondensing
• Maximum altitude: 3,000 m (10,000 feet)

• Two FireWire 800 ports (one on front panel, one on back panel)
• Two FireWire 400 ports (one on front panel, one 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 speaker
• Optical digital audio input and output TOSLINK ports
• Analogue stereo line-level input and output minijacks