Can't stress this enough: Those are a bunch of fancy die shots and hot-aired words which don't actually confirm anything. I've seen it before, and it should be disregarded, because for it to be true, the collective horse's mouth (Nintendo, Nvidia and "third party" developers) would have to be lying - This is what I mean by a lack of robustness. They would be lying in that case, and research into this matter would determine that all have questions to answer. There are all sorts of technicalities and even legal reasons why it couldn't be an off-the-shelf Tegra X1, let alone an underclocked one. Furthermore, for that to be true, you would have to reconcile it with the fact that it is playing games that wouldn't be possible on those specs (Because the Tegra X1 was already struggling to keep up with games from the 7th Generation), while it never had the full-cream edition of Unreal Engine 4 on it. I suspect that many people have seen "Tegra" and simply assumed "It's an X1 chip" - the collective horses mouth has stated otherwise explicitly. Why their word isn't believed, but rumour mills and speculations are, I don't know. We don't actually know what customisations were made, but "clock speed" on its own isn't a "custom design". Some laptops share the same processor, but have different clock speeds; they aren't advertised and sold as "custom processors". There's a reason for that - They're not custom processors.