The processor architecture behind Apple’s A7 and A8 chips is getting an incremental upgrade.

ARM, whose processor designs are used in most mobile devices, is adding features to its ARMv8.1-A architecture that could improve the security and speed of chips.

The new architecture is an upgrade from the existing ARMv8-A, which is in Apple’s A8 and also chips for Android devices.

The impact of these changes will be felt more on larger systems than mobile devices, said David Brash, architecture program director at ARM’s Architecture and Technology Group, in a blog entry.

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