iMac Retina 5K, Mid-2017

The iMac "Core i5" 3.8 27-Inch Aluminum (Retina 5K, Mid-2017/Kaby Lake) is powered by a 14-nm "Kaby Lake" 3.8 GHz Intel "Core i5" processor (7600K). It has four independent cores on a single chip, a 6 MB shared level 3 cache, 8 GB of user-upgradable 2400 MHz DDR4 SDRAM, a 2 TB Hard Drive+SSD "Fusion" drive, and a Radeon Pro 580 graphics processor with 8 GB of dedicated VRAM. An integrated "FaceTime HD" webcam and stereo speakers are also included.

This model features a 27-inch 5120x2880 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 5K" display. The aluminum rear housing is thicker in the middle and tapers to a slim 5 mm at the edges. Connectivity consists of four USB 3.0 ports, dual Thunderbolt 3 (USB-C) ports, Gigabit Ethernet, 802.11ac Wi-Fi, and Bluetooth 4.2.

Compared to its forerunner, this model maintains a nearly identical external design but features a more advanced processor and architecture, a significantly faster video card, a brighter display, and modern Thunderbolt 3 (USB-C) ports. By default, "Mid-2017" iMacs were shipped with a compact aluminum Apple Magic Keyboard and a multi-touch "Magic Mouse 2". For an extra US$30, an upgrade to the "Magic Keyboard with Numeric Keypad" was offered, and for another US$50, the Magic Mouse 2 could be swapped for a "Magic Trackpad 2," with multi-touch and pressure-sensitive "Force Touch" capabilities.

As the top-of-the-line 27-inch 5K iMac, this machine was lauded for its performance, featuring a fast Kaby Lake Core i5 processor and a very powerful Radeon Pro 580 graphics card with 8GB of VRAM. This level of graphics performance was capable of handling VR content creation, demonstrating a new potential for the iMac. The 2TB Fusion Drive also satisfied many pro users by balancing large capacity with high-speed access. The ease of RAM upgrades and the high expandability offered by Thunderbolt 3 ports solidified this model's excellent reputation. It was, without a doubt, one of the highest-performing all-in-one PCs of its time.