https://developer.arm.com/documentation/102378/0201/Armv8-x-and-Armv9-x-extensions-and-features https://developer.arm.com/documentation/102378/0201/Armv8-x-...

https://developer.arm.com/documentation/102378/0201/Armv8-x-and-Armv9-x-extensions-and-features https://developer.arm.com/documentation/102378/0201/Armv8-x-... Apple implements all armv8.5 features and some 8.6 features. The 9.0 competitors are at the same level as 8.5. Cortex-X4 is at 9.2 which is not yet in any SoC. The only difference between armv8.5 and armv9.0 is one single extension that is required on 9.0, namely SVE2 (scalable vector extensions 2).