It's been a while since the L1 cache size (64KB) has exceeded that of my first computer. What I find crazy is that a single Ryzen core has more in registers than some of the computers I've used.

AMD64 has 16 64 bit registers, but Ryzen actually has 168 behind the scenes so it can pipeline and reorder multiple instructions simultaneously. That's almost 1.5KBytes of memory, more than some microcontrollers have in ROM or RAM.