I'm so confused by what's what now. Are there now 3 types of M5 cores? Is an M5 performance core an M4 performance core or an efficiency core? WTH is going on?
@paul yes, three types of cores. Seems like they renamed the old performance core and added a new one in the middle. https://arstechnica.com/gadgets/2026/03/m5-pro-and-m5-max-are-surprisingly-big-departures-from-older-apple-silicon/
M5 Pro and M5 Max are surprisingly big departures from older Apple Silicon

Apple is using more chiplets and three types of CPU cores to make the M5 family.

Ars Technica