Intel has been selling hybrid CPUs with a mix of Performance and Efficient cores since the launch of 12th Gen Alder Lake CPUs back in November 2021. As it happens, AMD already has its own take on Intel's Efficient cores, as we've reported previously. But AMD is doing thing differently, very differently indeed.
We've explained previously how AMD's smaller Zen 4c cores are functionally identical to full fat Zen 4 with the exception of offering half the L3 cache. And yet they somehow only take up half the space of a Zen 4 core.
