[Neywiny]

You need to train whether you're on one die or 100. It's about your per bit skew and PVT

[namibj]

Yes, I was just pointing out why we choose to make the memory chips so fragile/dependant on the controller doing all the magic training for them.

[Neywiny]

Well no, your comment answered that we need training because the dies are made cheaply. But no amount of money would prevent the need to train out static and dynamic delays. If it wasn't in the controller it'd be in the memory and the question of why it's needed would still be relevant.