Cost efficiency is the key, though. It'd be kind of like newer 2.5" SSDs, the actual drive takes up a fraction of the space inside. Just without the benefit of

Cost efficiency is the key, though. It'd be kind of like newer 2.5" SSDs, the actual drive takes up a fraction of the space inside. Just without the benefit of being cheaper. Power savings would pale in comparison to cost and for many components like amps, bigger = more power.