That makes sense,
However there must be some killer feature that makes them superior to the x64 architecture. Could it be memory architecture? Power efficiency? How would you explain to a PHB the advantages it gives you over x64?
Sorry, I think that probably came off as more snippy than I would have liked. The legacy thing is pretty important. It is the only real upgrade path for HP/UX (or for that matter OpenVMS). So, most of the decision is based on conversion and upgrade paths. It has turned into a big iron processor like SPARC and POWER. You can certainly put a lot of them in a machine and people spent money building the systems, but I am not sure what a salesman would tell me the advantage is.
