-Pizdys-, WOW, now that is a KILLER chip, omg. Amazing that they can get all that into a chip, and the 14nm, sweat !
That will make is possible to record 4k without the issue of heat. But I wonder, at what price ?
To me the cheaper version of Hero 5 (if there is one) would probably have the H12 chip, if they stick with ambarella.
Nigel, not that I know of, h265 can use high bitrates, and dashcams have no power issues, as the car provides it. The chip should not overheat, it is like a cpu in a computer, h265 might product more heat in general, so that the chip will run a bit warmer as it is more complex and requires more computing power. But a chip has a TDP, and no matter what you do, the chip will not generate more heat than the specifications or limit, this is usually at 100 percent load.
What can happen is like in some DSLR, that the chip has a TDP, but because of mounting, cramped spaces and so on, the heat is not removed in a efficient way, so it builds up and makes the chip run to hot, and then shuts down. Almost all these types of chips have built in safe guards so they do not self destruct.