Assistance - Calling all Samsung EVO owners

really aint rating this fix so far, drive been thru some heavy use since new update out.
firmware update, optimized then restored.
ran test from magician and hdtune, all looked good, ran test this morning just to see, this under a week got to say, in both test since last week, both show at least 10%-15% down on results. time for new drive i reckon, for me personally, samsung has failed :(

The firmware has only been out 5 days to be fair. Strange that your performance has dropped so much in that small time frame. Mines still reading 500-530MB/s so touch-wood so far.
 
Been keeping an eye on mine over the last few days with regular benchmarks since the update and already a 7MB/s decrease in average speeds and 28MB/s decrease in maximum (verified as a downwards trend not just margin of error between runs) I'm guessing when the drive gets a bit of idle time it will bounce up again a bit :S

Definitely going to be relegated as the OS drive next system overhaul I do, possibly binned but I guess it'll be fine for misc use.
 
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Been watching movies, web browsing and playing H1Z1 then did a test

OS

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GAMES

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So all the new firmware does is just move your data around frequently?

Samsung need to recall these drives. It's painful.

They'll still last many years with the endurance Samsung designed. 99% will replapce these drives either due to low capacity or waiting more speed, before the NAND actually fails.

SATA3 SSD's are already obsolete - PCI-E M.2, NvmE drives completely outclass them.
 
They'll still last many years with the endurance Samsung designed. 99% will replapce these drives either due to low capacity or waiting more speed, before the NAND actually fails.

SATA3 SSD's are already obsolete - PCI-E M.2, NvmE drives completely outclass them.

Yes times up now for sata3 SSD`s we move on yet again. Same thing happened with mechanicals I still have some very old 40g drives still working away use them like USB sticks now.
 
Been keeping an eye on mine over the last few days with regular benchmarks since the update and already a 7MB/s decrease in average speeds and 28MB/s decrease in maximum (verified as a downwards trend not just margin of error between runs) I'm guessing when the drive gets a bit of idle time it will bounce up again a bit :S

Definitely going to be relegated as the OS drive next system overhaul I do, possibly binned but I guess it'll be fine for misc use.

Early days yet Rroff give it a couple of months. Try leaving the system on over night give it a test in the morning. Other then that see if you can get it swapped out for the 850 evo.
 
Early days yet Rroff give it a couple of months. Try leaving the system on over night give it a test in the morning. Other then that see if you can get it swapped out for the 850 evo.

I changed my 2 month old Evo 840 for a 850 and my other one which I went back due to being faulty was also replaced with a 850 evo as the 840s are end of life.

had no issues with either and had them both about a month now
 
So all the new firmware does is just move your data around frequently?

Samsung need to recall these drives. It's painful.

If that's what the new firmware does, and the user doesn't notice this happening, then there is nothing to be concerned about. Yes, it might have an impact on the SSD's lifespan, but it's almost certainly not going to be noticed by the majority of users.

I think Samsung will need to recall these drives if performance degradation shows up again.
 
It's May the 1st and Magician is still saying that v4.5 is the latest and there is no update. I am going to stick this one out and see how just how long it will take them.
 
I feel it is necessary to repeat that all SSDs rewrite their data as part of normal operation/garbage collection anyway - this fix may be causing it to happen more, I don't know, but rewriting of existing data is totally normal for SSDs.
 
Getting a pretty steady 510 MB/s with 8mb bench on HD tune now. Fingers crossed its good from now on.

Left mine idle for a couple of hours or so and now its a mostly dead straight line at 515MB/s with the odd small ripple, while TRIM, etc. is part of normal operation this is definitely going to be putting a fair few extra writes on the drive.

If you leave a drive for awhile offline though its gonna take awhile for performance to come back up and potentially risking data loss if its long term not in use.
 
If that's what the new firmware does, and the user doesn't notice this happening, then there is nothing to be concerned about. Yes, it might have an impact on the SSD's lifespan, but it's almost certainly not going to be noticed by the majority of users.

I think Samsung will need to recall these drives if performance degradation shows up again.

It's not just lifespan though. I'd want to know how often is the drive re-writing data, how long it takes and if is there a performance hit when it's rewriting data.
 
It's not just lifespan though. I'd want to know how often is the drive re-writing data, how long it takes and if is there a performance hit when it's rewriting data.

So far I haven't noticed any performance hit. I suspect that once the drive is optimised to run at full speed, any re-writing will be done periodically, and only on data that is slowing down. I suspect this will be carried out when the drive is idle, so will not be noticed by the end user.

I'm not going to worry about it too much, just keeping an eye on performance benchmarks once in a while. These 840 EVOs were always going to be the "value for money" choice for mainly home users. They delivered a very good performance/price ratio, and as long as the performance stays at the level that it should be, I don't think there is much to complain about. Yes we know that there have been issues, and as far as we know they have now been fixed. I'd be the first to complain if I thought we'd been sold a bad product ! At the moment I am happy that the product performs as I expected it to when I bought it. We can keep guessing what is now going on inside these SSDs, but as long as they perform well and are reliable the inner workings are largely irrelevant.
 
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