For Samsung SSDs named for OEMs, "PM" is equivalent to the Evo line, and "SM" is equivalent to the Pro line.  So a PM951 would be equivalent to a 950 Evo.  A PM961 would be a 960 Evo.  However, those models aren't officially sold in retail channels, so if you find them being sold on eBay or Amazon through third-party sellers, they are either used or were obtained through questionable means, which means either way you may have difficulty returning them in case of issues and should definitely not expect any warranty coverage from Samsung or anyone else.  If I were in your position, I would buy the SSD that fit my price/performance goals and try it out, since there is a strong likelihood it will work just fine.  If so, then I got what I wanted.  If not (very unlikely), then I can always return it.
Hello there, like anyone who is sick of SATA and/or is running out of space and want to upgrade, I am thinking about buying a solid state drive (SSD), preferably NVMe (because, who doesn't love performance?), and most importantly, works flawlessly on the 15 R2 version of Alienware. I've undoubtedly searched both Google and the forum and read a handful of threads about this. However, most of them were a bit outdated (like late 2017) so I am looking for some fresh info on this matter. I am interested in knowing what is the *most recent tested/compatible/recommended* Samsung SSD (NVMe) that works with the 15 R2. I really wished Dell could take the time to make such information available for people who wish to upgrade their gear, instead of spending valuable time in forums over and over again. Your feedback is most appreciated. Thanks
15 R2, most recent compatible/recommended Samsung SSDs (NVMe)?