Soundwave on 22 October 2016
We can even look at the Nvidia Shield console which has the Tegra X1 processor.
When running games it can go as high as 20 watts, even with a monster battery, lets use the iPad Pro (the giant iPad with a 12-inch display) that has a 38.8 wH battery which takes up most of the space of the inside.
At 20 watts, that battery would only be able to power that Tegra X1 at full tilt for not even 2 hours. It would die somewhere around 1 hour 50 minutes.
And a Tegra X1 is nowhere near an XBox One in raw performance.
