Profrektius on 18 February 2016
In two years, they have come up with a chip that is 3.5 times more powerful, and 75% more efficient. Meaning at 3.5 times more power it consumes less energy than before. This is progress in two years. It's easy to forget that the rest of the technology industry keeps moving forwards while the consoles don't. And I do realize that there are physical limits to prevent the further advancement at the same pace, but just to reach current gen power this shouldn't be an issue yet.
Source(click on the performance tab): https://www.arm.com/products/processors/cortex-a/cortex-a72-processor.php
