To me, this begs the question: why are higher memory VPS instances so much more expensive? I know they typically have more processing power, but the pricing sti

To me, this begs the question: why are higher memory VPS instances so much more expensive? I know they typically have more processing power, but the pricing still seems disproportionate. And I think the more exciting issue is the falling cost of SSDs. I was recently reading about in-memory databases being much faster not just because of faster access, but because they spend so much less CPU time working around disk access issues. Can the whole OS be written that way? We are quickly heading toward exciting times.