The beautiful iMac design that you know. But with even better specs. The Apple iMac 4K has been upgraded to give you all the power you need to tackle serious projects (as well as everything else you do each day). You've got a fast processor, impressive AMD graphics and a beautiful Retina Display. The 4K screen is able to create 1 billion colours, so each video and image looks as good as it does in real life. Whether you're helping the kids with homework, finishing off a video or making final edits to your photography, every image will be full of bright and vibrant colour.