Apple Watch Ultra 4 and Series 12 Get Unannounced 4GB RAM Upgrade, Report Says

The specification appeared in Xcode 27, the development environment that lists memory details for devices, MacRumors reported. Apple usually does not publish RAM specifications for Apple Watch, but Xcode makes the information available to developers. 9to5Mac said both the Apple Watch Ultra 4 and Apple Watch Series 12 carry 4GB of RAM. Apple has not formally announced or detailed the memory increase elsewhere.

The additional memory comes alongside the new S11 chip that powers both watches. According to 9to5Mac, the S11 chip represents the first meaningful performance upgrade on Apple Watch in years, and it arrives just in time for a suite of AI features in watchOS 27. The report said Apple did not reveal the RAM detail as part of its performance story for the new models.

Last year's Apple Watch Ultra 3 and Apple Watch Series 11 had 2GB of RAM, so the new generation doubles the memory. Apple does not typically disclose this figure, and the company did not mention it in the launch materials described by 9to5Mac. The Xcode data was reported by MacRumors and then highlighted by 9to5Mac.

Apple opened preorders for the Apple Watch Series 12 and Apple Watch Ultra 4 on Sept. 9. The two watches are the first to use the S11 chip, and the 4GB RAM specification is the latest hardware detail to surface after their introduction. Apple has not provided additional details about the memory change in its public materials, according to the report.

Editor's Summary

Apple's new Apple Watch Series 12 and Apple Watch Ultra 4 have 4GB of RAM, double last year's models, according to 9to5Mac. The upgrade was not announced by Apple and appeared in Xcode 27 data reported by MacRumors. The extra memory pairs with the S11 chip and watchOS 27 AI features, though Apple has not detailed the RAM change.