@joerg_rw

Thanks for all posts enriched with details. Love to read and learn new stuff. However, I have a simple question: how would you explain Droids working at 1.3GHz for hours, playing emulators, benchmarks, heavy web surfing, etc? Don't you think based on this manufacturers are too conservative? If the life shortens so much by upping the frequency from 500-600, even 800, people should be able to experience so many "symptoms" of CPU failure. For instance, if from 10k hours lifetime drops to 500h at 1GHz, it would be hard to not have clear signs of CPU damage. I, for one, think it is pure marketing b.s.

Apple lowers frequency for battery saving. However, based on manufacturers stance on higher clocks, iPhone 4s should be able to live for 10 human generations.