Snapdragon X2 Elite ARM Laptop CPU

18 cores = 12 Prime and 6 Performance Cores

Not sure what a prime core is.

For comparison the M4 Pro can go as high as 10 performance cores and 4 efficiency cores.

Looks like some benchmarks have started leaking: https://www.notebookcheck.net/Snapdragon-8-Elite-Gen-5-perfo...

Mind you, Geekerwan managed to push the A19 Pro to 4019 in Geekbench 6 by using active cooling. https://youtu.be/Y9SwluJ9qPI

Today I learned that people are overclocking phone CPUs/SoCs

You can probably pretty easily just say Prime==Performance and Performance==Efficiency, but I think the "Prime" branding is kind of a carry over from Snapdragon mobile chips where they commonly use three tiers of core designs rather than the two. They still want to advertise the tier 2 cores as fast so T3 is efficiency, T2 is performance, T1 is Prime.

As an example, the Snapdragon 700-series had Prime, Gold, and Silver branding on it's cores.

Active cooling just means adding a fan.