Apple iMac 27" (5K 2017) Retina I7-7700K 4.2GHz, 16GB RAM, 1TB Fusion A1419

Specs at a Glance:

• 27-inch DCI-P3 "Retina 5K" Resolution LED-backlit display (5120*2880 resolution)
• Intel Core 4.2GHz quad-core i7-7700K "Kaby Lake" processor
• 16GB DDR4 RAM
• 1TB Fusion Drive
• AMD Radeon Pro 570 Graphics
• FaceTime HD Camera
• Four USB 3, two Thunderbolt 3 (USB-C), Gigabit Ethernet and SDXC card slot
• Wi-Fi 802.11ac and Bluetooth 4.2
• macOS 10.15 Catalina
• Apple Wireless Keyboard and Magic Mouse

More spec details below, courtesy of our friends at EveryMac.

The iMac "Core i5" 4.2GHz 27-Inch Aluminum (Retina 5K, Mid-2017/Kaby Lake) features a 14-nm "Kaby Lake" 4.2 GHz Intel "Core i7" processor (7700K) with four independent processor "cores" on a single chip, a 6 MB shared level 3 cache, 16 GB of easy to upgrade 2400 MHz DDR4 SDRAM, a 1TB Fusion Drive, and a Radeon Pro 570 graphics processor with 4 GB of dedicated VRAM. It also has a built-in "FaceTime HD" webcam and stereo speakers.

This model has a 27" 5120x2880 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 5K" display. The rear of the case is aluminum and is thicker in the middle and tapers to a razor thin 5 mm at the edges.

Connectivity includes four USB 3.0 ports, dual Thunderbolt 3 (USB-C) ports, Gigabit Ethernet, 802.11ac Wi-Fi, and Bluetooth 4.2.