A discussion has arisen on the English Language SE site about the term computing cycles, where I personally think normal usage is clock or processor cycles.
Obviously different processor & software architectures massively affect the significant of anything measured in "cycles" anyway. Comparing such values for a RISC processor as against an Intel Core i7 sounds pretty meaningless to me.
But it got me to thinking. I realise "computing power" in general is a vague concept, involving many sub-elements (processor speed / flexibility, video / disc / memory speed, etc.) So is there any concept of a "rough & ready" measurement that somehow averages out all the potentially relevant performance metrics of any particular machine so it can be compared to others?