Aha! That makes so much sense to me. My first PC, which I still have (runs OpenBSD nowadays), is a 350 MHz Pentium II. When I got my Raspberry Pi (a version 1 model B), running a 500 MHz ARM, I was a little taken aback by just how much slower it seemed than my old P2 box. It's got a faster clock and more RAM, how could that be? But it certainly feels slower!
Do you have any sources on this? Can you perhaps link me to something that explains the differences between the ARM and the P2 that lead to such a difference in performance despite the clock speeds?
Do you have any sources on this? Can you perhaps link me to something that explains the differences between the ARM and the P2 that lead to such a difference in performance despite the clock speeds?