Actually, it wouldn't be dumb at all. As it stands, anywhere from 2-4 gigs are unavailable to developers anyway because that's reserved for the OS. Having separate memory dies, DDR4 in this case, would resolve the issue of having to reserve a small chunk of the much faster GDDR6 for tasks that, quite frankly, it has no business being burdened with. I actually wouldn't be surprised if both Sony and Microsoft take the same approach and leverage the separate dies (assuming it's true, of course) with the SSD to make a RAMDisk partition specifically for the OS. The downside is that's extra silicon and that expense would be passed onto us.