By going the AI route with PSSR, Sony can virtually eliminate artifacts that can show up when upscaling games from a lower resolution. It’s able to produce an image that looks virtually the same as native 4K, but at a much higher frame rate than otherwise. The cool part is that it’s scalable. Developers can work in ray traced eye candy to their heart’s content, and then just use a more aggressive version of PSSR. That means they can upscale to 4K from as low as 720p, and it’ll still look decent. Though, to be clear, rendering at that low of a resolution will produce a lackluster image, no matter how much AI you throw at it.