Preliminary results for Crucial BX200 concerning degraded read speeds

[Glaring_Mistake]

I guess the obvious question there is how fast does "Background Program Page Count" rise relative to actual written data and does the Write Amplification Factor keep rising relative to normal use. Eg, if you 75% filled an SSD with data, recorded Host & Background blocks written, unplugged it for 8-12 weeks then plugged it back in again just idling, and tens of Gigabytes of started getting written in the background, then it would become obvious what was happening.

Here is evidence of the BX200 performing some rewrites:

Looking at the attribute Total TLC Write Count (which is in 32MB units) before and after scan it looks to be about 4,5GB worth of writes.

Something to note however is that these numbers can apparently go up and down so I don't know how reliable they are.

 

[Glaring_Mistake]

I know this update is pretty late but here it is:

It is not too exciting however since it is just a slight drop of 20MB/s since the last test.

 

[BSim500]

I know this update is pretty late but here it is:

It is not too exciting however since it is just a slight drop of 20MB/s since the last test.

Are you seeing any CRC errors on the files (if you took pre-test snapshots?) There probably won't be any, but ouch at those 95-110MB/s read speeds.

 

[Glaring_Mistake]

Have some hashfiles in order to test file integrity but haven't checked yet since that may affect future results.
But even if read speeds have dropped quite a bit, I believe read speeds for the 840 and 840 EVO could drop even further than that without files being corrupted so as you say it is unlikely that any files on the BX200 will be either.