That might be what the parent is saying. Most software is so poorly written that even if it needs to do something CPU intensive it is probably still skipping a

That might be what the parent is saying. Most software is so poorly written that even if it needs to do something CPU intensive it is probably still skipping around in memory so much that memory bandwidth isn't an issue. My experience is that it takes well structured memory access to actually max out memory bandwidth even if the numbers seem like the CPU would be starved.