Some models ship with a processor made by TSMC while others come with a Samsung-made component. While you'd expect that Apple would ensure both are built to offer comparable performance, it appears that may not be the case. It's already been revealed by Chipworks that the Sammy model is 10% smaller, but if a couple of videos recently published are anything to go by, you might be better off with a TSMC model…
Well-known tech YouTubers, Austin Evans and Jonathan Morrison both uploaded videos showing how they tested the TSMC and Samsung models against each other and ended up with the same conclusion: You'll get better battery life from the TSMC model.
Apple swiftly removed the app that let you check what CPU is in your phone. LMBO #ChipGate
— ℵ яΛιđאя ʞנΛи (@LEVST3R) October 8, 2015
Looks like Apple doesn't want you to find out what chip is in your iPhone 6s. #chipgate pic.twitter.com/VU2tWW69G3
— Ryan (@rysgam) October 8, 2015
I am pretty sure this Lirum Device Info Lite app just got taken down. Apple was not having it. #chipgate
— Robert Bassett (@YourDailyTechy) October 8, 2015