The conclusion, however, that Flash SSDs are often misleadingly presented as energy savers to increase your battery mileage on notebooks, is not invalidated. The truth is that more and more Flash SSDs will be increasingly efficient. But many conventional hard drives can also be more efficient than today’s Flash SSDs in the scenarios some of you were demanding: when providing data under a defined workload such as video playback or in idle until the notebook battery runs empty.
We looked into all of that to find answers to the questions. You will see that there is indeed one Flash SSD that beats the living daylights out of any hard drive now, and you will see that answers can only be found for specific applications. (link)