And load times "feel" faster.
over all the entire experience "feels snappier", not something I can put my finger on but, even web browsing feels snappier now and moving files from one nvme drive to the other, just WOW!!!!!!!
Moving my blender files, A mix of longer avi's and many, many small png's from 245 MB/s to 1000 MB/s, that's way faster than sata to sata.