He's talking about "recently" in the age of computing hardware, not the last few years. You need to wait until around 1995[1] to find a mac with more standard RAM than an i9 has in its L2 cache[2].
I see. I was hoping there was something more interesting going on, such as CPU-private bookkeeping... or perhaps supporting that JVM that lives in the management engine. :)
[1] https://en.wikipedia.org/wiki/Power_Macintosh_5200_LC [2] https://en.wikichip.org/wiki/intel/core_i9/i9-7900x