In the absence of a serious problem that starting a new “gate”, this year we have what is known as “Chipgate”. With this name is known to a problem that, if it is true that it can not be a hardware failure, yes it is the fact that Apple has taken a wrong decision in which users participate in a lottery in which we can acquire an iPhone 6s A9 processor manufactured by TSMC 16nm or one with a 14nm A9 processor manufactured by Samsung. The problem is that it seems that the processor manufactured by the Taiwanese company is more efficient than the processor manufactured by the Korean company, but new tests show that the difference, if any, is minimal.
Initial tests showed a difference of 20% in favor of the A9 manufactured by TSMC, which could result in 2h autonomy. 20% is an outrage that Apple soon came to deny, ensuring that the difference is 2% or 3%. In its statement, Apple said applications benchmarks do not provide actual usage data from a device, so you should check it in other ways.
The above results are from a test that has made Ars Technica. For testing, although they say they are “controlled”, two AT&T iPhone 6s were used , one with the A9 processor manufactured by TSMC and another with the A9 manufactured by Samsung, they have removed the card SIM and both had the same screen brightness.
It is said that the test Geekbench 3 is the one that does not show results that match actual use. The other three, as you can see in the picture above, the difference would confirm that Apple says there are between the two devices, which is 2-3%. Anyway, it seems that TSMC processor is more efficient than the Samsung, but it is likely that this is because Apple is limiting Samsung processor so that there is no major differences.