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[Guru3D] Endurance Test of Samsung 850 Pro Comes to an end after 9100TB of writes

5K views 44 replies 36 participants last post by  azanimefan 
#1 ·
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Yes, so that is 9.1 Petabyte of data written! Good lord. The German colleagues from c't (print magazine) have ended their SSD endurance tests after the last SSD decided to go belly up.

That last SSD of the survivors was the Samsung 850 Pro, and it had written an astounding 9100 TB of data, yep 9,100,000 Gigabytes. That particular SSD is rated for 150 TB written and now is three years old.

c't used six SSDs of each model: OCZ TR150, Crucial BX 200, Samsung 750 Evo, Samsung 850 Pro, SanDisk Extreme Pro and SanDisk Ultra II. Conclusive was the fact that all SSDs lasted way longer then advertised. The two SSDs that failed first where a Crucial BX200 , which lasted twice the number of advertised writes at 187 and 280 TB. Then also a number of SSDs died after a accident that caused a power surge or peak (could not understand it really well as the original article is written in German). The top batch became the SanDisk Extreme Pro and Samsung 850 Pro models, they all lasted a minimum of 2.2 Petabyte.

A normal office system writes between 10 and 35 GB per day. Even if you had a generous 40 GB per day, a nominal endurance of 70 TBW would be achieved after five years. Now if we extrapolate that data and take it to the Samsung SSD 850 that would be 60 times the guaranteed write performance of 150 TBW. At that average of 40-gigabyte daily usage, (purely theoretical of course) that SSD would have lasted 623 years.
Source: http://www.guru3d.com/news-story/endurance-test-of-samsung-850-pro-comes-to-an-end-after-9100tb-of-writes.html
 
#3 ·
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Originally Posted by Darkpriest667 View Post

and we used to say that SSDs weren't reliable, show me a HDD that can do 9100 TB of writes.
This. I work in a data center, and there are sooooooo many HDD replacements. I think we might have replaced ONE SSD.
 
#6 ·
i have to check how many TBs my 850 Pro has written
biggrin.gif
I knew investing in Korean-made flash memory was the right decision.
 
#7 ·
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Originally Posted by Shiftstealth View Post

This. I work in a data center, and there are sooooooo many HDD replacements. I think we might have replaced ONE SSD.
We've replaced several SSDs at work in developer machines. Most of the older ones were cheaper drives (eg. Liteon) though. Mine lasted about 2 years before reporting SMART errors and making the machine unusable. I think I've got an 850 Evo now.
 
#8 ·
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Originally Posted by randomizer View Post

We've replaced several SSDs at work in developer machines. Most of the older ones were cheaper drives (eg. Liteon) though. Mine lasted about 2 years before reporting SMART errors and making the machine unusable. I think I've got an 850 Evo now.
We have flash-only Compellent SC7020s, and some older SC4020's. I don't recall replacing too many drives on them.
 
#9 ·
the only unreliability of SSDs are mostly due to firmware bugs, manufacturing defects, or design flaws.
so if you can get past a few months of use without encountering a single issue then its pretty much unlikely that it'll die anytime soon.
 
#11 ·
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Originally Posted by xTesla1856 View Post

Makes me feel good about my 850 and 960 EVO. Sammy all the way
thumb.gif
Right? And here was I, worried about Chrome during its cache writing craze. Have at it, Google!
 
#14 ·
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Originally Posted by TheBloodEagle View Post

Sadly more and more are coming out as TLC only, although those still lasted a good while too. But it shows you the "Pro", well inherent benefits, of MLC.
if its the recent 3D or V-NAND TLC then thankfully they have bigger cell sizes than the planar TLC.
due to it, V-NAND TLC has as much endurance as a planar MLC.

though on a side note, 850 PRO uses V-NAND MLC, which has a much higher write endurance than planar MLC.

Samsung V-NAND TLC (850 EVO / 960 EVO) = 40nm node
Samsung V-NAND MLC (850 PRO / 960 PRO) = 40nm node
Samsung planar MLC (840 PRO) = 21nm node
 
#15 ·
Glad i bought two of these Samsung !
 
#16 ·
The enemy of SSDs is age and the enemy of HDD is usage. Plan accordingly.
 
#17 ·
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Originally Posted by DarkBlade6 View Post

The only unreliable SSD ever made is the OCZ Vertex 2
I had a 60GB OCZ Vertex 2 that lasted me 5 years.. I'd say I got pretty decent use out of it when it did indeed fail.
 
#18 ·
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Originally Posted by sepiashimmer View Post

Why are SSDs so expensive? And are they made with the same material found in microSD cards and USB sticks?
They are all made of silicon but that's where the similarities end. The way SSDs are made vary from brand to brand and are all different from the way memory cards and USB sticks are made.
 
#19 ·
Windows SSD 'tweaks' are irrelevant i guess.
 
#22 ·
Quote:
Originally Posted by DarkBlade6 View Post

The only unreliable SSD ever made is the OCZ Vertex 2
The original Vertex was even worse. They had something like a 60% or higher return rate according to someone at OCZ if I remember right. In any case, it was one of many victims of those first few years of mainstream SSD penetration where the controllers and firmware were both buggy garbage.
 
#24 ·
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Originally Posted by 222Panther222 View Post

Hmm i might get an ssd for a new build now.. They should have tested different brands like the intel ones.
I have purchased hundreds and hundreds of SSDs. Intel for enterprise and Samsung 840/850 EVOs and Pros. I have never had either fail, ever.
 
#26 ·
5 years ago I was all about fast HDDs and RAID for getting high bandwidth on the cheap, now I probably won't even buy a HDD. Next build is going to be all SSDs, with PCIe for the OS and apps. I don't store massive files so 4TB is enough (for now). Of course, 5 years ago I was making half of what minimum wage is so it's probably not a good comparison.
 
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