DRAM that is unused according to the OS doesn't need to use battery, as it doesn't need to be refreshed. If this selective no-refresh feature isn't already impl

DRAM that is unused according to the OS doesn't need to use battery, as it doesn't need to be refreshed. If this selective no-refresh feature isn't already implemented, I would expect Apple to be working on implementing it in their SoCs. But it's such an obvious and simple power saving feature that I would be surprised and disappointed if it wasn't implemented many years ago.