Question I think Crystal Disk Info giving inaccurate information ?

[universalrule]

I just checked 2 of my portable SSDs. Both of their TBW is 600. One is WD Blue SSD 3D and another one is Sandisk Ultra SSD 3D. The Crystal Disk Info shows me something very wrong.

https://imgur.com/7Ml6LdF

https://imgur.com/CfRzKFK

As you can see above, WD has written more than Sandisk, but the lifespan still 99% remains whereas Sandisk indicates 98%.
IMO, WD uses a trick to fool Crystal Disk Info, or the app is inaccurate.
What do you think?

 

[fzabkar]

CrystalDiskInfo is reporting what the drive is reporting. Can you show us the report from WD's Dashboard?

 

[CountMike]

I just checked 2 of my portable SSDs. Both of their TBW is 600. One is WD Blue SSD 3D and another one is Sandisk Ultra SSD 3D. The Crystal Disk Info shows me something very wrong.

https://imgur.com/7Ml6LdF

https://imgur.com/CfRzKFK

As you can see above, WD has written more than Sandisk, but the lifespan still 99% remains whereas Sandisk indicates 98%.
IMO, WD uses a trick to fool Crystal Disk Info, or the app is inaccurate.
What do you think?

Lifespan/health is an arbitrary function, specially for SSDs, based on TBW estimate and usage as well warranty and time to it's end, It's up to program's developer to interpret it. Disks can go bad and/or die even when 101% healthy. There's no program or anybody that can predict that. As long as SMART table is normal, you can be reasonably sure it will last long time.

 

[universalrule]

CrystalDiskInfo is reporting what the drive is reporting. Can you show us the report from WD's Dashboard?

Here you go, but it looks not so much different. The only thing is that the health state of the Q drive is normal in WD Dashboard whereas it has 2 yellow warning sign in Crystal Disk Info.

https://imgur.com/kI0ac8t

View: https://imgur.com/kI0ac8t

https://imgur.com/jC5AxnN

View: https://imgur.com/jC5AxnN

 

[universalrule]

Lifespan/health is an arbitrary function, specially for SSDs, based on TBW estimate and usage as well warranty and time to it's end, It's up to program's developer to interpret it. Disks can go bad and/or die even when 101% healthy. There's no program or anybody that can predict that. As long as SMART table is normal, you can be reasonably sure it will last long time.

I have 15 SSDs, but luckily none of them has any issue since 2019. I don't use front port nor USB hub for the portable drives. I also have 5 HDDs, and 2 of them have issues even though I've taken care of them carefully.

 

[USAFRet]

98% vs 99% could also just be a rounding margin.

98.4 = 98
98.7 = 99

That number in CDI is not meant to be an absolute.