According to Khaos Tian, the Studio Display takes 2GB of the 64GB of internal NAND storage. While some free space is likely required for firmware updates, the 62GB of idle space is currently useless. The internal storage capacity of the Studio Display is not specified in Apple technical specs.
An A13 Bionic chip is used in the Studio Display. In 2019, the A13 Bionic was first released with the iPhone 11 series, and it was added to the second-generation iPhone SE and the ninth-generation iPad. Smaller amounts of NAND storage may be incompatible with the A13’s storage controller, as none of these devices have ever been offered in storage configurations below 64GB.
It is also now clear that the Studio Display has better specifications than the second-generation Apple TV 4K, which sports an A12 Bionic chip and a base storage configuration of just 32GB. The Studio Display runs the full version of iOS 15.4, with the same build used by the iPhone and iPad, meaning that updates to the display’s functionality will come as part of iOS updates.