[Brightcolours]

The R5 needs the computing/data transmit power anyway, for the high FPS throughput it is said to be able to deliver. The video processing/encoding itself is not "expensive" compared to the RAW data throughput power the camera anyway gets...

So, if you think you need an R5 with its high data capability (high frame rate), you get 4k and 8k for free as bonus, basically.