99% health after 1 year 4 months

[Venomus244]

Hello. I have Kingston Fury Renegade 1TB that is rated for 1TB – 1.0PBW (1000 TBW). I wrote only 7.39 TB and lost 1% after 1 year 4 months. For a reference, my brother has Kingston NV2 250 GB and lost only 4% after writing 26.63 GB 2.5 years later. How is that even possible? According to techpowerup, NV2 250GB is only rated for 80 TBW. Either techpowerup is wrong or HDDSentinel is wrong here. Also, how is 1% 7.39 TB? Seems like HDDSentinel is using rounding to nearest integer instead of actually showing percentage. 7.39 TB of 1000 TBW would be 0.739% not 1%. Hopefully someone can explain this because it is rather misleading. Thanks for your response.

[hdsentinel]

I can confirm that Hard Disk Sentinel is not NOT "wrong here" or so.

The wearout % is calculated by the SSD itself based on different factors.
While the amount of writes is important - there are many other factors like power on time, total write commands and the "type" of the writes: frequent update of smaller files (even if the total amount of written data is lower) can cause faster wearout than saving only some big files.

Hard Disk Sentinel "just" reads this wearout value which calculated by the SSD itself.

So if prefer, I'd suggest to contact the manufacturer support for assistance as they can probably explain the % result.
If you use Report menu -> Send test report to developer option, it is possible to check the complete status, this may give some ideas, thoughts.

Please refer to:
https://www.hdsentinel.com/kb/category/16/solid-state-drives-ssds/why-my-ssd-shows-98-health-if-no-problems-reported.html

Personally for me, 0.739% wearout and 16 months age should be completely "enough" for 1% loss of Health. This does not mean there is anything wrong with the SSD, exactly the opposite: it provides an accurate (and even ideal) Health % level of the memory cells.

What's wrong with 99%? I mean it is better to see VERY slow decrease than having a 100% "perfect" SSD failing...

[Venomus244]

Nothing wrong about losing 1%, it is just that I didn’t expect the percentage loss after only writing 7.39 TB. I don’t transfer many files, but I do save often in video games if I play them (which is maybe 2-3 hours per day), where most of my productivity on computer comes from coding, meaning SSD being idle (more or less). Sort of caught me off surprise that my brothers SSD decreased 4% in 3 years and his SSD is NV2 which has way worse reliability and controller than mine. Thanks for your response.