Does the iphone cpu frequency change when the cpu load is different?

Question

Does the iphone cpu frequency change when the cpu load is different, or it does not change, stay a fixed frequency? if it changes, how can i get the realtime cpu frequency?if anyone knows,please tell me, thank you so much!!!

Answer 1

As a general, historical statement Tonefox is correct.  For certain particular cpus woodmeister is correct.  Cpus have historically been single frequency units, though over-clocking has been done for several years.  Doing so pushes the cpu beyond its guaranteed speed, but has tended to work since most cpus from quality vendors will actually operate at higher speeds.  The manufacturer just does not guarantee the results...remember the Pentium fiasco in the early years of that chip?  Today manufacturers are ceertifying particular product lines for over-clocking on a periodic basis.  And that is what dynamic clocking really is, over-clocking but not at a constant clock speed as has been done in the past.
Much of the silicon on the market will function at higher clock rates, the only question is does the maker guarantee the accuracy and performance at those clock rates.