Comment by Sakos
2 years ago
For an example of an SSD review that shows a sustained write test:
https://www.tomshardware.com/reviews/samsung-980-m2-nvme-ssd... (https://cdn.mos.cms.futurecdn.net/mzdXcBUJUuxkbYfmQigqQE-970...)
In a 900 second timeframe, the 980 Pro drops down to a bit above 1GB/s, while the worst is somewhere in the tens of MB/s. So there are significant differences in SSD performance profiles which you can only find out about from reviews like this.
Similar results here:
https://www.anandtech.com/show/16504/the-samsung-ssd-980-500...
This was the kind of review I was talking about. But you should also look at the specific capacity you're after. IIRC for the 980 non pro the 1 TB is better than the smaller ones.