Apple iMac 27-inch Retina 5K Display

Product Details:

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

Processor:
3.4GHz quad?core Intel Core i5 (Turbo Boost up to 3.8GHz)
or
3.5GHz quad?core Intel Core i5 (Turbo Boost up to 4.1GHz)
Configurable to 4.2GHz quad-core Intel Core i7 (Turbo Boost up to 4.5GHz)
or
3.8GHz quad?core Intel Core i5 (Turbo Boost up to 4.2GHz)
Configurable to 4.2GHz quad-core Intel Core i7 (Turbo Boost up to 4.5GHz)

Memory:
8GB (two 4GB) of 2400MHz DDR4 memory; four SO-DIMM slots, user accessible
Configurable to 16GB or 32GB
or
8GB (two 4GB) of 2400MHz DDR4 memory; four SO-DIMM slots, user accessible
Configurable to 16GB, 32GB, or 64GB
or
8GB (two 4GB) of 2400MHz DDR4 memory; four SO-DIMM slots, user accessible
Configurable to 16GB, 32GB, or 64GB

Storage:
1TB Fusion Drive
Configurable to 2TB Fusion Drive or 256GB, 512GB, or 1TB SSD
or
1TB Fusion Drive
Configurable to 2TB or 3TB Fusion Drive or 256GB, 512GB, or 1TB SSD
or
2TB Fusion Drive
Configurable to 3TB Fusion Drive or 512GB, 1TB, or 2TB SSD

Graphics:
Radeon Pro 570 with 4GB of VRAM
or
Radeon Pro 575 with 4GB of VRAM
or
Radeon Pro 580 with 8GB of VRAM

Connections and Expansion:
3.5 mm headphone jack
SDXC card slot
Four USB 3 ports (compatible with USB 2)
Two Thunderbolt 3 (USB-C) ports with support for:
- DisplayPort
- Thunderbolt (up to 40 Gbps)
- USB 3.1 Gen 2 (up to 10 Gbps)
- Thunderbolt 2, HDMI, DVI, and VGA supported using adapters (sold separately)
10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
Kensington lock slot

Wireless:
Wi-Fi
802.11ac Wi-Fi wireless networking
IEEE 802.11a/b/g/n compatible
Bluetooth
Bluetooth 4.2 wireless technology

Size and Weight:
Height: 20.3 inches (51.6 cm)
Width: 25.6 inches (65.0 cm)
Stand depth: 8 inches (20.3 cm)
Weight: 20.8 pounds (9.44 kg)

Operating System:
macOS High Sierra