[throwawaylinux]

> Not all work is created equal.

> And in any case, it's very likely you could just shove more voltage through the chip and get it to clock higher,

Yes.

> since the current 3.2GHz is very far from what we know TSMC N7/5 can do.

N7/N5 can "do" 200GHz. 90nm could do 100GHz. The limit a device can do depends most highly on the logic.

> I don't think you'd need a rework unless Apple wanted to target 4.5+GHz.

3.2->4.4? I doubt it with any reasonable voltage that could actually ship in a device. Very hard to predict these things unless you've at least got basic shmoo plots and things like that in front of you.