Samsung 970 PRO 512 - Just clone took 1.4TB of Total Bytes Written

[AkhandChakra]

Hi

I just got the new 970 PRO, 512 GB and cloned data from my SATA M.2 to this 970 PRO NVMe one using the Samsung Data Migration tool. To begin with when i test with Crystal Disk Mark i just got 3200-3300 MB/s not 3500 MB/s. Anyways, i just did the clone of around 180GB of data from my old M.2 to this NVMe M.2, now Samsung Magician SMART shows I've used 1.4 TB of TBW !!! I really don't understand why it took 6.6 times of data written in Total Bytes Written. Is this normal, or something wrong in 970 PRO, as I've never seen TBW increasing so many times just after initial clone of hardly 200GB of data.

pls suggest.

Rgds

 

[karenjoly]

That drive is warranted to 5 Years or 600 TBW. It can be expected to last much longer , since that is just the warranty period. I cannot explain the apparent discrepancy in your clone size and the SMART result. Someone here will figure it out I'm sure.

The performance spec says (SEQUENTIAL READ)

Up to 3,500 MB/s.

 

[AkhandChakra]

That drive is warranted to 5 Years or 600 TBW. It can be expected to last much longer , since that is just the warranty period.

The performance spec says (SEQUENTIAL READ)

Up to 3,500 MB/s.

I understand warranty part, which is good.

Question i've is why should a latest & greatest NVMe SSD takes 1.4TB for cloning a 180GB SSD in first place done thru Samsung's own Disk Migration tool in a brand New drive ?

Second regarding upto MB/s, 960 EVOs I think gives 3000-3200 MB/s, for $159, why for just 100 more MB/s Samsung charges a premium of $90 calling it as PRO ? Is it a Lime or my unit is bad is my concern.