> This is what IBM and people living off mainframes tell the world all day long, but I think you'll have trouble showing that mainframe's job can't be replaced by a few hi-end x86 servers under cost.

It's been tried many times before, and it never works out. Whether it's system complexity that can't be replicated, or woes from floating point imprecision, it's a hell of a lot harder than people who haven't dug into it think.