I have an AlphaServer in my collection (DS10.) For a 25+ year old system, it still feels pretty snappy!
The other one I can't find I swear was a former AMD engineer talking about how Intel bet the farm on one ibm mainframe design but AMD went with an older architecture (under the hood of x86 for both) that was harder to deal with but ultimately runs faster and that's how we got ryzen. Maybe I'm just losing my mind.