It is rare to notice small improvements differences when they are delivered incrementally. You would notice if you went back to that machine from 7 years ago an

It is rare to notice small improvements differences when they are delivered incrementally. You would notice if you went back to that machine from 7 years ago and tried to use it today. There is also the idle nature of most computer usage. That next gen i7 will not load Facebook appreciably faster. CPU limited tasks could be only 5% of normal use. So a 20% improvement for 5% of the time.