content: While true about the energy savings being less substantial compared to other breakthroughs in the past, its kind of like losing weight, no? If you are 100 pounds over weight you are going to lose 50 pounds easier than someone who is 20 pounds over weight is going to be able to lose 10 pounds.  I think for a lot of this type of technology we are getting to a point where big breakthroughs that have effects on par with a 90% reduction in energy are going to be less and less common.