AFAIK, this sort of stacked die thing has barely started to reach actual commercial products. It's been an idea for a long time, but quite hard to get right.

AFAIK, this sort of stacked die thing has barely started to reach actual commercial products. It's been an idea for a long time, but quite hard to get right. Anyway, it's no different than another IC of considerable complexity -- obviously there's no ability for an end user to repair what's inside it.