Mac Pro Quad-Core and Dual GPU

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3.7GHz Quad-Core Intel Xeon E5 processor 12GB 1866MHz DDR3 ECC memory Dual AMD FirePro D300 with 2GB GDDR5 VRAM each 256GB PCIe-based flash storage Processor 3.7GHz Quad-Core Intel Xeon E5 with 10MB L3 cache and Turbo Boost up to 3.9GHz Configurable to 3.5GHz 6-core processor with 12MB L3 cache, 3.0GHz 8-core processor with 25MB L3 cache, or 2.7GHz 12-core processor with 30MB L3 cache Memory 12GB (three 4GB) of 1866MHz DDR3 ECC memory Configurable to 16GB (four 4GB), 32GB (four 8GB), or 64GB (four 16GB) Graphics Dual AMD FirePro D300 graphics processors with 2GB of GDDR5 VRAM each Configurable to dual AMD FirePro D500 with 3GB of GDDR5 VRAM each or dual AMD FirePro D700 with 6GB of GDDR5 VRAM each Display Support Connect up to three 4K displays or up to six Thunderbolt displays Storage 256GB PCIe-based flash storage Configurable to 512GB or 1TB Size and Weight Height: 9.9 inches (25.1 cm) Diameter: 6.6 inches (16.7 cm) Weight: 11 pounds (5 kg) Audio Combined optical digital audio output/analog line out minijack Headphone minijack with headset support HDMI port supports multichannel audio output Built-in speaker Connections and Expansion Four USB 3 ports Six Thunderbolt 2 ports Dual Gigabit Ethernet ports One HDMI 1.4 port 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 Maximum continuous power: 450W 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: 16,400 feet (5,000 m) Typical acoustical performance, sound pressure level (operator position): 12 dBA at idle Show more