What are you using to read the SMART data?
I noticed that the RAW smart value from all Intel SSDs is in units of 32 MiB. But CrystalDiskInfo displays a field at the top called "Host Writes _____ GB", where it converts the 32 MiB unit field to GiB, but labels it GB.
It is really sad, it seems that almost all Windows programs incorrectly label GiB as GB, but almost all linux programs correctly label the units (and most give you a choice of GiB or GB). Incorrectly labeled units cause a lot of confusion. Besides the problems we are having monitoring TB written to our SSDs, the Windows trend of labeling the units incorrectly has apparently convinced countless newbies that formatting their drive somehow decreases the capacity by 10% or whatever. Arghhh!
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