macOS Tahoe 26.3.1 Renames M5 High-Performance Cores to 'Super' Cores

TL;DR Summary
Ars Technica reports that macOS Tahoe 26.3.1 retroactively renames the M5’s high-performance cores from “performance” to “super” cores, aligning with the new M5 Pro/Max naming. The change appears only cosmetic—no real performance difference for existing M5 Macs—while updating System Information and Activity Monitor and enabling Studio Display support. Older M-series chips (like the M4) are not affected.
- macOS Tahoe 26.3.1 update will “upgrade” your M5’s CPU to new “super” cores Ars Technica
- Apple's iOS 26.3.1 Brings Bug Fixes, Studio Display Support CNET
- Apple has one more release this week: OS 26.3.1 is here Macworld
- macOS 26.3.1 is now available for Mac, here’s what’s new 9to5Mac
- Apple Releases macOS Tahoe 26.3.1 With Support for Studio Display and Studio Display XDR MacRumors
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