Apple just lately launched its A12Z Bionic chipset on the 2020 iPad Pro fashions. The same naming to the A12X Bionic discovered on the 2018 fashions and the reasonably modest enchancment in efficiency made folks marvel if these two chips are largely related.
Seems, they’re principally similar. In response to a die shot by the silicone evaluation agency TechInsights, the A12Z and A12X have the identical die construction when seen up shut, together with the eight GPU core clusters and their positioning on both chipsets.
Our evaluation confirms #Apple #A12Z GPU chip discovered inside #iPadPro (mannequin A2068) is identical as A12X predecessor. A report of our findings is underway & might be accessible as a part of TechInsights’ #Logic Subscription. Study extra right here https://t.co/WWQqlPorNF pic.twitter.com/RsQEADpZsc
TechInsights (@techinsightsinc) April 13, 2020
The distinction then comes from how the 2 chips are binned. The A12X shipped with seven out of the eight GPU clusters enabled whereas the higher binned A12Z has all eight clusters enabled.
Often, producers disable cores on silicone to extend yields. Only a few dies may have all cores operational however to keep away from wastage, producers will then use these wafers in cheaper fashions with fewer marketed core depend.
In case of the A12X, one of many GPU clusters was possible disabled to extend the yield. Nonetheless, two years later, Apple have to be getting a lot better yields now from the TSMC 7nm course of so they’re now capable of get chips with all eight cores absolutely operational. Clearly, this does not advantage a very totally different product identify, which is why the “new” chip is just known as A12Z and also you now have one additional GPU core at your disposal.
It is doable a few of the A12X chips on 2018 iPad Execs can also have a purposeful eight core however because it has been disabled in software program you will not actually be capable to use it. To not point out there is not any technique to know which one would have a purposeful core and which will not.