Display:
27-inch (diagonal) Retina 5K display with IPS technology
5120‑by‑2880 resolution with support for millions of colors

Processor
3.3GHz quad‑core Intel Core i5 (Turbo Boost up to 3.9GHz)
Configurable to 4.0GHz quad-core Intel Core i7 (Turbo Boost up to 4.2GHz)

Memory
24GB of 1867MHz DDR3 memory; four SO-DIMM slots, user accessible
Configurable to 32GB

Storage
2TB Fusion Drive
Configurable up to 3TB Fusion Drive or 256GB, 512GB, or 1TB of flash storage (SSD)

Graphics
AMD Radeon R9 M395 graphics processor with 2GB of GDDR5 memory
Configurable to AMD Radeon R9 M395X with 4GB of GDDR5 memory

Connections and Expansion
3.5 mm headphone jack
SDXC card slot
Four USB 3 ports (compatible with USB 2)
Two Thunderbolt 2 ports
Mini DisplayPort output
Support for HDMI, DVI, VGA, and dual-link DVI (adapters sold separately)
10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
Kensington lock slot

Size and Weight
Height: 51.6 cm
Width: 65.0 cm
Stand depth: 20.3 cm
Weight: 9.54 kg