A:Answer On the laptop I have it was not even a samsung ssd. It was a hynix ssd. While hynix is still a good quality ssd manufacturer, it's weird that it's not a samsung chip used on my laptop. As for the speed, it is a similar 500 MB/s ssd. It's a SATA III. The rumor is that NVME is actually supported on this laptop, but Samsung customer support denies it. but there is a youtube video on by mike mu on swapping the ssd to a samsung 950 pro on the previous generation of the same lineup.
BUT, tbh, you really won't need an NVME ssd. Why? This is a laptop with portability in mind. As such, its performance is not workstation grade or gamer grade. If you want raw performance, you need a laptop that weighs 5 lbs+ and has fancy GPU's. With this in mind, SSD's capabilities will most likely to not be the bottleneck of your laptop's performance. I mean, you might do some very short video editing, sure, but hopefully this isn't going to be your main rig for 4K video editing... Or you might use it for quick computation, but this laptop shouldn't be your main high performance compute machine...