27-inch (diagonal) LED-backlit display with IPS technology; 5120 x 2880 resolution with support for millions of colors

Processor

3.8GHz3.8GHz QUAD‑core Intel Core i5 (Turbo Boost up to 4.0GHz)

Memory

8GB of 2400MHz LPDDR4 onboard memory

Configurable to 16GB

Storage

2TB

2TB (5400-rpm) hard drive

Configurable up to 2TB Fusion Drive or 256GB of flash storage (SSD)

Graphics

AMD Radeon Pro 580 8GB

External DisplaysThe iMac simultaneously supports full native resolution on the built-in display and either one 5120 x 2880 (5K) external display at 60 Hz with support for 1 billion colors, two 3840 x 2160 (4K UHD) external displays at 60 Hz with support for 1 billion colors, or two 4096 x 2304 (4K) external displays at 60 Hz with support for millions of colors.Thin DesignThe iMac maintains its 5mm profile, which is up to 40% less volume than the 2011 iMac. Its display panel is 1.4mm thin.802.11ac Wi-Fi & Bluetooth 4.2With three-stream 802.11ac technology, you're instantly connected to all your favorite content. Bluetooth 4.2 wireless technology is also built in, so you can connect accessories such as a wireless keyboard and mouse.Gigabit EthernetFor a more reliable network connection, take advantage of wired Gigabit Ethernet technology.Thunderbolt 3Two Thunderbolt 3 (USB Type-C) ports come standard on all iMac models, each delivering up data transfer speeds of up to 40 Gb/s external drives and cameras, plus twice the bandwidth for video and display connectivity. Thunderbolt 3 also supports 10 Gb/s USB 3.1 and DisplayPort 1.2. Thunderbolt 2, HDMI, DVI, and VGA output is also supported using adapters (sold separately).USB 3.0With USB 3.0, you can transfer large files in seconds instead of minutes. Every iMac comes with four 5 Gb/s USB 3.0 Type-A ports - with speeds up to 10 times faster than USB 2.0 - and you can connect all your USB-compatible devices, including your iPhone, iPad, iPod or digital camera.FaceTime HD CameraA built-in FaceTime HD camera allows users to use apps such as FaceTime and Skype for video calls.