[jotm]

2.5" SSDs have the advantage of being surrounded by a heatsink (at least all SSDs I've seen had a (semi)metallic case and thermal pads), while m.2 and NVMe often do not.

So a lot of them fail from overheating - mostly cheaper models/makes. But even the cheapest Samsungs (that their own controllers) seem to fare better than cheap brands like ADATA.

Actually, this has been a problem for a lot of controllers - RAID, SATA, USB3.x, networking cards that fail due to the manufacturer using subpar cooling - usually a small heatsink that they've deemed to be good enough under "normal usage" (i.e. not heavy, sustained usage), or they rely on server cooling to do the job (which actually makes sense).