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Samsung 840 EVO read speed drops on old-written data in the drive - Page 314

post #3131 of 3279
Quote:
Originally Posted by NitrousX View Post

My two and a half year old 840 EVO suddenly died. The BIOS cannot detect it nor can Parted Magic. Tested on three different computers. The last time I checked I had written ~4TB worth of data to the drive. Is there a chance that the firmware bug caused my drive to die all of a sudden?

Lol, no.
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post #3132 of 3279
Quote:
Originally Posted by Palorim12 View Post

Lol, no.

Why not? Did you write the firmware?
post #3133 of 3279
Quote:
Originally Posted by SATDK View Post

Why not? Did you write the firmware?

No, but the FW isn't constantly rewriting the data of the drive. and the new fw also fixed the bug, So how would it crash his system?
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post #3134 of 3279
Quote:
Originally Posted by Palorim12 View Post

No, but the FW isn't constantly rewriting the data of the drive. and the new fw also fixed the bug, So how would it crash his system?

So in other words, you have no clue. rolleyes.gif
post #3135 of 3279
Quote:
Originally Posted by SATDK View Post

So in other words, you have no clue. rolleyes.gif

Well his question was "Is there a chance that the firmware bug caused my drive to die all of a sudden?"

yes, the bug slowed down reads on old data, but i don't think it ever caused someone's drive to brick. And since the new FW fixed the bug, and is very low impact on the drive i don't see how it could be the reason as to his failure either.

So i'd say, its more of an educated guess.
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post #3136 of 3279
I just ran read speed test after a very long time and can confirm that issue is definitely fixed. I flashed firmware almost a year ago and windows installation is done more than a year ago. No slow downs thumb.gif

post #3137 of 3279
Same problem on a 850 Evo 250 GB 2.5" !

Day 1:
2LQ2aFr.jpg

After 8 months:
cAmxBUG.jpg

A little more than 1 year later:
QzTjhfb.jpg

After diskfresh:
0N90mEv.jpg

There's a lot of old stale data (game instalation) on this disk!
Edited by dvsv - 2/28/16 at 3:09am
post #3138 of 3279
Good thing I decided a while ago I'd only ever buy MLC.
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post #3139 of 3279
Quote:
Originally Posted by dvsv View Post

Same problem on a 850 Evo 250 GB 2.5" !

Were you testing it with 8MB block size?
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post #3140 of 3279
Quote:
Originally Posted by bogdankr View Post

Were you testing it with 8MB block size?
64KB (i think it's the default value for the free version of HD Tune).

Anyway there's another report here (850 Evo mSATA):

http://forums.anandtech.com/showpost.php?p=38057282&postcount=54
http://forums.anandtech.com/showpost.php?p=38057306&postcount=55



We need more testing of 1 yr+ old 850 Evo drives!
Edited by dvsv - 2/28/16 at 3:19am
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