Originally posted by heliosh
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A meaningful comparison should measure energy consumption used to perform a set number of tasks.
e.g. If a CPU needs to go into a higher power state to finish the task quicker but use less energy as a result (i.e. more efficient), then this will be reflected in a lower total energy consumption.
When only looking at power consumption, a CPU that spends more time in slower states will always look better, regardless of whether it's more efficient to perform the task at hand.
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