With a 5K (5120 x 2880) screen resolution, this iMac provides one billion colors and 500 nits of brightness.

The Retina 5K display also features the wider P3 color gamut, which provides a larger color space that shifts away from standard white LEDs to red-green phosphor LEDs that more equally represent red, green, and blue. And with more available colors, the images will appear more vivid and reveal greater detail, with more balance and precision. The display is further enhanced by True Tone technology for a more natural viewing experience
The iMac's processor has been upgraded and now houses an 10th Gen 3.8 GHz Intel Core i7 8-Core processor that can be overclocked up to 5.0 GHz, as well as 8GB of 2666 MHz DDR4 RAM in a 2 x 4GB configuration that can be upgraded to 128GB by using an 32GB module in each of the four SO-DIMM slots. Visuals are powered by a dedicated AMD Radeon Pro 5500 XT graphics card with 8GB of GDDR6 video memory, and for storage, there is a 512GB PCIe SSD.

Outfitted with Wi-Fi 5 (802.11ac) and backwards compatible with 802.11a/b/g/n for speedy hook-ups to your home network, this iMac is also configured with Bluetooth 5.0, as well as a UHS-II SDXC card slot, two 40 Gb/s Thunderbolt 3 ports, four 5 Gb/s USB 3.0 Type-A ports, a Gigabit Ethernet jack, and a 1080p FaceTime HD camera.

It also has a Kensington lock slot for added security.
Apple's 27" iMac with Retina 5K Display operates using 100-240 VAC at 50-60 Hz and includes an Apple Magic Keyboard, an Apple Magic Mouse 2, a Lightning to USB Type-A cable, and a power cord. Protection is provided by 90 days of complimentary technical support and a limited 1-year warranty, which can be extended by purchasing AppleCare+ for Mac.
This Mac comes preloaded with macOS. Updates can be downloaded for free via the Mac App Store.

Please check Apple's website for upgrade eligibility.MAXED! FULLY LOADED | 16GB RAM (cost $800) | GPU 2GB (cost $300) | 1TB HD | Updated to latest macOS HIGH SIERRA | Comes pre-installed with nice Audio/Video/Editing/Productivity Apps like Apple Pages (Documents), Apple Numbers (Spreadsheets), Apple Keynote (Presentations), Apple Mail, Apple Garageband (Music creation), Millions of Apps in App Store, Apple iMovie (Video editing), Apple iTunes (Music), Apple Photos (Organize), Apple Photo-booth (Fun app for kids!), Apple Facetime (Free Video Calling), Apple iMessages (Free instant messaging), Apple Dictionary, Apple iDVD, Apple Safari Browser (Eye candy!), Apple SIRI. You would be delighted! :-) Similar apps would be worth more than $2000._____________________________

PACKAGE CONTENTS: Comes bundled with WIRELESS keyboard & WIRELESS mouse (see image # 2) and apple power cable.
Brand Apple

Operating System MacOS High Sierra
CPU Model Core i7
CPU Speed 3.4 GHz
Card Description Dedicated
Graphics Coprocessor NVIDIA GeForce GTX 675MX
Memory Storage Capacity 500GB