It looks like A53 was announced in October 2012, but I’ve found no indication of whether the design was actually finished by then [0]. And remember that ARM ju

It looks like A53 was announced in October 2012, but I’ve found no indication of whether the design was actually finished by then [0]. And remember that ARM just sells IP and other companies are responsible for manufacturing it; it doesn’t look like anyone actually produced A53 cores until 2015 [1] — whereas Apple was shipping actual consumer products with A7’s in them by October 2013. [0]: https://www.techspot.com/news/50656-arm-announces-64-bit-cortex-a57-and-cortex-a53-processors.html https://www.techspot.com/news/50656-arm-announces-64-bit-cor... [1]: https://en.wikichip.org/wiki/arm_holdings/microarchitectures/cortex-a53 https://en.wikichip.org/wiki/arm_holdings/microarchitectures...