The 27" iMac (Retina 5K, Late 2015) - MK472LL/A-BTO was released in 2015 and features a 4.0GHz Core i7 processor and 27" display. Graphics processing is handled by an integrated Radeon R9 M390 graphics card with 2GB of VRAM.

The standard model shipped with a 1TB Fusion 3.5" Hard Drive and 8GB of PC3-14900-1867MHZ-DDR3-SO-DIMM RAM.

Key Features:

• A quad-core 4.0 GHz Intel Core i5 processor with 8 MB of shared level 3 cache
• 8GB, 16GB or 32GB of 1867 MHz DDR3 RAM, expandable up to 32 GB
• 256GB, 512GB, 1TB, 2TB  SSD
• An AMD Radeon R9 M390 graphics card with 2 GB of GDDR5 memory
• A 27-inch LED-backlit display with 5120x2880 resolution and IPS technology
• A built-in FaceTime HD camera and stereo speakers
• Four USB 3 ports, two Thunderbolt 2 ports, and an SDXC card slot
• Built-in AirPort Extreme, Bluetooth 4.0, and Gigabit Ethernet
• macOS
• Year : Late 2015
• Model : MK472LLA
• A wireless keyboard and a Magic Mouse or Magic Trackpad