iMac: Get a refurbished iMac 21.5-inch slimline (2015). Screen Size: 21.5" screen size. Specs: 8GB Ram and 1TB HDD. Processors: 1.6 GHz Intel "Core i5" processor with Intel HD Graphics 6000 graphics processor. Webcam: Built-in "FaceTime HD" Webcam. Operating System: Find more information on the operating system and latest version available on your product with our refurbished tech guide page. iMac Computer 21.5" Slimline 8GB Ram 1Tb Memory | Living Social