The other interesting thing from the video/article:
AMD has not shared its plans for machine learning support with RDNA 2, and there is some confusion about its implementation in the next-gen consoles. Microsoft has confirmed support for accelerated INT4/INT8 processing for Xbox Series X (for the record, DLSS uses INT8) but Sony has not confirmed ML support for PlayStation 5 nor a clutch of other RDNA 2 features that are present for the next generation Xbox and in PC via DirectX 12 Ultimate support on upcoming AMD products.
Broadly speaking then, the Xbox Series X GPU has around 50 per cent of the RTX 2060's machine learning processing power. A notional DLSS port would see AI upscaling take 5ms to complete, rather than a 2060's circa 2.5ms. That's heavy, but still nowhere near as expensive as generating a full 4K image - and that's assuming that Microsoft isn't working on its own machine learning upscaling solution better suited to console development
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850