Apple iMac 27" 5K Retina Quad Core i5 3.3GHz late-2015, 16GB, 256GB SSD MK482LL/A

Specs at a Glance:

• 27-inch DCI-P3 "Retina 5K" Resolution LED-backlit display (5120*2880 resolution)
• Intel Core 3.3GHz quad-core "Skylake" processor
• 8GB DDR3 RAM
• 1TB Fusion Drive
• AMD Radeon R9 M380 Graphics
• FaceTime HD Camera
• Four USB 3, two Thunderbolt 2 (Airplay supported), Gigabit Ethernet and SDXC card slot
• Wi-Fi 802.11ac and Bluetooth 4.0
• macOS 10.13 High Sierra
• Apple Wireless Keyboard and Magic Mouse

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

The iMac "Core i5" 3.2 27-Inch Aluminum (Retina 5K, Late 2015/Skylake) features a 14-nm "Skylake" Quad Core 3.3 GHz Intel "Core i5" processor (6500) with fourindependent processor "cores" on a single chip, a 6 MB shared level 3 cache, 8 GB of 1867 MHz LPDDR3 SDRAM (PC3-14900) installed in pairs (two 4 GB modules), either a 1 TB (7200 RPM) hard drive or a 1 TB "Fusion Drive," and an AMD Radeon R9 M290 or AMD Radeon R9 M390 graphics processor with 2 GB of dedicated GDDR5 memory. 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 2 ports, Gigabit Ethernet, 802.11ac Wi-Fi (802.11a/b/g/n compatible), and Bluetooth 4.0.

Compared to its predecessor, this model essentially has the same external enclosure, but it has a higher quality DCI-P3 "Retina 5K" display with a wider color gamut as well as a more advanced architecture and graphics architecture.