Apple Desktop Computer iMac 27-inch (Retina 5K) 3.6GHZ 8-Core i9 (2019) MRR02LL/A-B 24 GB 3 TB HDD 5120 x 2880 Display Dual Boot Mac OS/Windows 10 Pro Keyboard and Mouse All-In-One Refurbished Apple iMac (2019)3.6GHZ 8-Core i924 GB DDR4 RAM 3 TB HDDDual Boot Mac OS/Windows 10 Pro27 Retina 5K 5120 x 2880 Display Radeon Pro 580X graphics processor Includes Keyboard and Mouse Use Windows side by side with macOS (no restarting required) on your iMac. Share files and folders copy and paste images and text and drag and drop files between Mac and Windows applications. See Parallels.com for more information.iMac 27-inch (Retina 5K) 3.6GHZ 8-Core i9 (2019). - Apple MRR02LL/A-BTO. The iMac Core i9 3.6 27-Inch Aluminum (Retina 5K Early 2019) features a 14-nm 9th Generation 3.6 GHz Intel Core i9 processor (I9-9900K) with eight independent processor cores on a single chip a shared 16 MB level 3 cache customize your hard drive and memory and a Radeon Pro 575X or Radeon Pro 580X graphics processor with 4 GB or 8 GB of dedicated GDDR5 video memory. It also has a built-in FaceTime HD webcam and stereo speakers.