Unfortunately there have been recent issues with the 870 EVO series also: https://www.techpowerup.com/forums/threads/samsung-870-evo-beware-certain-batches-pron

Unfortunately there have been recent issues with the 870 EVO series also: https://www.techpowerup.com/forums/threads/samsung-870-evo-beware-certain-batches-prone-to-failure.291504/ https://www.techpowerup.com/forums/threads/samsung-870-evo-b... There may be multiple, different issues with Samsung parts at play here. The 900 series issues seem to have been addressed with a f/w update; the 870 EVO issues were - allegedly - caused by bad NAND and the devices needed to be replaced. ofc part of the problem here is the lack of public acknowledgement / information from Samsung on these issues.