980 Pro

Yes, that can happen. Had a 980 Pro, that showed as healthy in CDI as well, but as it was benchmarking around 400MB/s read, 200MB/s write, it clearly had degraded, so I got it exchanged through the Samsung 5 year full warranty on SSDs.

That Samsung 980 Pro being 6+ years old is probably your main suspect here 💀 SSDs start getting sketchy around that age, especially if it's your boot drive that's been hammered with constant read/writes. The IO1 error usually points to storage controller issues rather than the PCH fan - that fan war

real I have one of their nvme drives and it's been working flawlessly meanwhile my Samsung 980 pro 2TB died in less than a year. would randomly disconnect and wouldn't be able to be read by the motherboard in the bios. I was lucky enough that it stayed alive just enough for me to clone the data to a

Sadly i do the same as u/davidthek1ng too because its the easiest and laziest way out, but it's also the most risky and unadvised method to go about doing this, we should all be installing a secondary OS on a separate drive. It doesnt need to cost a fortune, it just needs to be a basic 128GB or 256G

Back in ~2023, some variants of the Samsung 980 PRO (and 990) were shipped with a broken firmware, which caused them to degrade abnormally fast and eventually fail. Normally a firmware upgrade would've fixed that... Not sure if it affected the non-PRO variants too.