Refurbished Apple Mac Pro 6,1/Xeon E5-2697v2/64GB RAM/512GB SSD/Dual D700’s/A (Late 2013)

The Mac Pro "Twelve Core" 2.7 (Late 2013) is powered by a single 2.7 GHz Twelve Core 22-nm Xeon E5-2697v2 processor with a dedicated 256k of level 2 cache for each core and 30 MB of level 3 "Smart Cache." If otherwise equipped as the default models, this configuration has 12 GB or 16 GB of 1866 MHz DDR3 ECC SDRAM, a 256 GB SSD, and dual AMD FirePro D300, D500, or D700 graphics processors with 2 GB, 3 GB, or 6 GB of GDDR5 memory each, respectively.

Connectivity includes six Thunderbolt 2 ports, one HDMI 1.4 UltraHD port, 4 USB 3.0 ports, and Dual Gigabit Ethernet ports in addition to 802.11ac and Bluetooth 4.0.

Originally, this model reportedly supported as many as three 4K displays or six Thunderbolt displays. However, on June 16, 2015, without updating the graphics cards themselves, Apple quietly increased the official support to as many as three 5K displays (5120x2880) -- two using Thunderbolt 2 ports and one using the HDMI port. The support for as many as six 2560x1600 displays using all six Thunderbolt 2 ports remained unchanged.