Display 
27-inch (diagonal) Retina 5K display 
5120-by-2880 resolution with support for one billion colors 
500 nits brightness 
Wide color (P3) 

Processor 
10-Core 
3.0GHz Intel Xeon W 
Turbo Boost up to 4.5GHz 
23.75MB cache 

Graphics 
Vega 64 
Radeon Pro Vega 64 graphics processor 
with 16GB of HBM2 memory 
64 compute units 
4096 stream processors 
11 teraflops single precision 
22 teraflops half precision 

Memory 
64GB 
64GB of 2666MHz DDR4 ECC memory 

Storage1 
1TB SSD 

Video Support and Camera 
1080p FaceTime HD camera 
Simultaneously supports full native resolution on the built-in display at 1 billion colors and: 
Two 5120-by-2880 (5K) external displays at 60Hz with support for 1 billion colors, or 
Four 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or 
Four 4096-by-2304 (4K) external displays at 60Hz with support for millions of colors 
Support for extended desktop and video mirroring modes 
Thunderbolt 3 digital video output 
Native DisplayPort output over USB-C 
Thunderbolt 2, HDMI, DVI, and VGA output supported using adapters (sold separately) 
Audio 
Stereo speakers 
Four microphones 
3.5 mm headphone jack 
Connections and Expansion 
Nbase-T Ethernet with support for 1Gb, 2.5Gb, 5Gb, and 10Gb Ethernet using RJ-45 connector 
SDXC card slot with support for UHS-II 
Four USB 3 ports 
Four Thunderbolt 3 (USB-C) ports with support for: 
DisplayPort 1.2 
Thunderbolt (up to 40 Gbps) 
USB 3.1 Gen 2 (up to 10 Gbps) 

Secondo monitor 4K 10 bit, cavo video Displayport 
Hard disk 3 TB per Timemachine