Captain_Tom said:
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Do you have a source for that claim I've bolded?
It doesn't seem very likely, given that AMD are apparently moving down to 16nm in 2016. At 20nm Nvidia claims their Tegra X1 can produce 400GFlops of compute performance at 10 watts, even though 16nm is about 25% more efficient than the 20nm process Nvidia uses for their SOC and current parts, it's not going to allow for a drop that steep.
Tegra X1 scaled up to 5X could produce around the same performance as PS4's SOC at 50watts, Nvidia tends to be more efficient in their architecture than AMD, so comparing as like for like as possible maybe AMD can get their Zen APUs down to about 40 watts and that's assuming they have a really good efficient chip design for their next gen SOCs.
A 15 Watt SOC, with the same performance as PS4 is a few years away after 2016.