Apple Mac Pro 'Quad Core' 3.7GHz Xeon (ME253LL/A) 64GB RAM, 512GB Solid State Drive (Renewed)

There’s no mistaking the “Late 2013” Mac Pro models for the ones before it, as they feature a “radical” departure Apple describes from the large, highly expandable design of yesteryear and instead feature a compact, glossy dark gray cylinder design that’s about one-eighth the mass but has limited internal expansion. Apple explained that these “Space Gray” cylinder Mac Pro models are “designed around an innovative unified thermal core” and have not only faster processors than previous models, but also dual workstation-class graphics processors, faster memory, and faster PCIe 2.0 x4 flash storage. In lieu of internal expansion, the system provides ample high-speed ports for external connectivity options. Specifically, this model, the "Quad Core" Mac Pro 3.7 (Late 2013), is powered by a single 3.7 GHz 22nm Xeon E5-1620v2 Quad Core processor with a dedicated 256k L2 cache for each core and 10MB L3 "Smart Cache." It includes 64GB of 1866MHz DDR3 ECC SDRAM, a 512GB SSD, and dual AMD FirePro D300 graphics processors with 2GB of GDDR5 memory each. Connectivity includes six Thunderbolt 2 ports, an HDMI 1.4 UltraHD port, 4 USB 3.0 ports, and dual Gigabit Ethernet ports, plus 802.11ac and Bluetooth 4.0. Originally, this model supposedly supported up to three 4K displays or six Thunderbolt displays. However, on June 16, 2015, without updating the graphics cards, Apple quietly increased official support to up to three 5K (5120x2880) displays, two using Thunderbolt 2 ports and one using the HDMI port. Support for up to six 2560x1600 displays using the six Thunderbolt 2 ports remained unchanged.