Is it actually a different die though? The A18 and A18 Pro are so close in specs, with the same 6 CPU cores, same 16 NPU cores and only 5 vs. 6 GPU cores that I would guess that they are the very same die just with one GPU cluster and USB3 switched off in the non-Pro version.
On the 15 series it was since they used different chip generations. No idea on the new 16 series, we’ll have to wait for die shots from teardown groups.
A18 Pro is also faster. Typically the speed and 5 vs 6 core difference would use the same die and selecting Pro chips during testing. Chips that tolerate heat better become pro-model chips.
The rumor was that they are different dies. It seems strange because both are made with the same 2nd generation 3nm architecture.
Is it actually a different die though? The A18 and A18 Pro are so close in specs, with the same 6 CPU cores, same 16 NPU cores and only 5 vs. 6 GPU cores that I would guess that they are the very same die just with one GPU cluster and USB3 switched off in the non-Pro version.