Processing

• Two 2.26GHz  Quad-Core Intel Xeon 5500 series processors
• Next-generation Intel microarchitecture
  • 8MB of fully shared L3 cache per processor
  • Integrated memory controller
  • Turbo Boost dynamic performance
  • 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

• 12GB OF 1066MHz DDR3 ECC SDRAM

Graphics and displays

• NVIDIA GeForce GT 120 with 512MB of GDDR3 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)

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 8TB of internal storage in hard drive bays
  • 1TB Serial ATA 3Gb/s, 7200 rpm, 16MB cache hard drive installed in bay 1

    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

Electrical and operating requirements

• 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: 50° to 95° F (10° to 35° C)
• Storage temperature: -40° to 116° F (-40° to 47° C)
• Relative humidity: 5% to 95% noncondensing
• Maximum operating altitude: 10,000 feet

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 v10.11.4 El Capitan (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)

Size and weight

• Height: 20.1 inches (51.1 cm)
• Width: 8.1 inches (20.6 cm)
• Depth: 18.7 inches (47.5 cm)
• Weight (standard configuration): 41.2 pounds

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