The one fly in the ointment here is that if you run Xbox One X on a 4K screen, you're still getting a 1080p dashboard, upscaled - just as it is on the S model. When we visited Microsoft at the end of March, the original plan was to reserve 1GB of RAM for the upgraded ultra HD dashboard, leaving 8GB total for developers. Microsoft tells us that game-makers said that they could use the extra memory, so plans for the 4K front-end were dropped. GameDVR has been upgraded to support 4K media and this does still operate in ultra HD, but otherwise, all elements of the dash are a little bit blurry owing to the upscale. The bottom line? Xbox One X features nine gigs for games, with 3GB reserved for the system.