I suspect (again, i’m only making wild guesses here) it has to be TLC, since its only limited to 840/840evo, while 840pro is not affected. Given how many states TLC must hold and very small litography its quite possible, that data retention is dropping faster than we though. Or it could be something entirely different.

I wonder as well. And yes, I believe this drive is a great alternative to the MX100.

I have taken note of the 840 cold files issue when it first appeared as well, it is a little disappointing. Hopefully a simple F/W update can fix it. Otherwise, I am pondering if it could be a TLC NAND cause.

I wonder how other capacities perform. This kind of write is avarage at best, since even older 840 topped that.

But, if this is priced right, its a great alternative to MX100. Lets just hope this thing doesn’t have the same issues as 840 and 840EVO, as those drives experince quite a drop in read performance on cold files. Its actually an issue, that many have nowdays.