I don't get how that would be efficient. If you have no work to be done, why have a processor cranking away at busy work, using power, churning out heat and consuming it's limited lifespan? Correct me if I am wrong here, but there is no greater latency going from idle to 100% utilization than there is from 75% to 95%. If you want a processor that is efficient by this standard, go find a 386sx. It should be pegged at 100% all the time using any modern OS. I've dull booted Ubuntu on my desktop and I can boot win7 and open photoshop cs3 faster than I can boot ubuntu to its gui. Not sure why but my desktop boots Win7 super fast.