It's been often quoted that Nvidia has switched to tile based for their Desktop renderers, but I haven't seen a source that confirms this. I suspect this is speculation due to changes in raster order that produce side-effects that look tiled even though they aren't.
This has been empirically tested on multiple occasions. There is an article on realwordtechnologies discussing this, and the results have been related for newer AMD GPUs as well. I have a little tool for macOS that tests these things out, and the Navi GPU on my MacBook is definitely a tiler (the Gen10 Intel GPU is not).
It's brought up in multiple other comments, so I won't bother going into detail, but the empirical testing, is flawed and is actually measuring changes in other details about thread launch behavior.
