Samsung 840 SSD TLC NAND torture test update

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RetiredChief

RetiredChief

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Feb 22, 2007
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Hey Johnny
Had a problem at work with one the computers. They had installed a SSD (Older Crucial C300) also had a WD Black HDD (F). The system locked up and when the did a forced shut down it came up with a "please insert boot media". It finally booted to the C drive, but F was no wheres to be found. When I checked the SSD, I found they had installed it with BIOS set to IDE. Do NOT want to play around with the drive so I cloned it to one of My Agility IIIs. F drive was toast.
Replaced the C300 with the Agility III, removed HDD. Fixed the C drive (set for AHCI and set BIOS). shrunk C drive and Made the remainder F. There space requirements are small, about 30 gigs max for C and 10 gigs max for F.
Told them I could set up the C300 - they said NO, leave My agility III in and they bought me a Samsung 840 Pro to replace my drive.
 
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jackson1420

jackson1420

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May 10, 2010
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Super interesting post thanks JohnnyLucky

I will be following that to see how it works out past %0

Very exiting especially since I installed these in a company that cannot deal with downed drives. Very reliable so far.
 
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JohnnyLucky

JohnnyLucky

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May 30, 2007
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Retired Chief - Interesting way to upgrade :)

jackson1420 - Some of the other sites that publish hardware reviews were of the opinion the longevity of the Samsung TLC Nand was only 1,000 p/e cycles or about 7 or 8 years of writing and deleting 10GB of data every single day. Samsung disputed it but never published any information or estimates of their own. Hopefully the torture test will provide more information.
 
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JohnnyLucky

JohnnyLucky

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May 30, 2007
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JohnnyLucky

JohnnyLucky

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May 30, 2007
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I think there is a typographical error in this morning's update. 600GB did not seem correct so I went back and looked at the previous updates and the live video. I'm pretty sure it should have read almost 600TB instead of 600GB.

I hope the test methodology is correct. Hardware Info is running the test 24/7 without periodically turning the system off and on. A comment was posted suggesting that periodically turning the system off and on might effect data retention and longevity.
 
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JohnnyLucky

JohnnyLucky

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May 30, 2007
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This morning Hardware Info issued another update.

One of the two Samsung 840 ssd's that was being tested almost reached 3,000 p/e cycles before developing problems. It passed 3,000 p/e cycles before data in one block was totally lost and the ssd was declared dead.

A grand total of 779,538 Gigabytes of data were written to the ssd during the test.

Here is the link to the update page:

http://uk.hardware.info/reviews/4178/8/hardwareinfo-tests-lifespan-of-samsung-ssd-840-250gb-tlc-ssd-update-update-7-29-5-2013

If a user writes 10GB of data per day and deletes 10GB of data per day and the write amplification is 1, then the ssd will last almost 200 years in a best case scenario

If a user writes 10GB of data per day and deletes 10GB of data per day and the write amplification is 10, then the ssd will last about 20 years in a worst case scenario.

Hardware Info is testing two Samsung 840's. The second ssd is still going strong.
 
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JohnnyLucky

JohnnyLucky

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May 30, 2007
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You're Welcome.

I just wish the word would get around. We've still got forum members that are not aware of the tests. There are some that are still making negative statements about TLC NAND and the Samsung 840.

For that matter I wish there were some way to set the record straight about synthetic benchmarks. We still have forum members posting one ssd is twice as fast as another ssd when in fact most modern 3rd generation ssd's form a very tight performance cluster. Think I'll do a little research and start a thread about that.
 
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JohnnyLucky

JohnnyLucky

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May 30, 2007
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This morning Hardware Info issued their final update about the Samsung 840 TLC flash memory torture test.

Both ssd's lasted more than 3,000 complete p/e cycles which is three times more than original estimates when the 840 was first introduced. For a typical home user or gamer that is the equivalent of about 75 years of use.

Hardware Info concluded that a Samsung 840 SSD with TLC memory is just as reliable as SSDs with MLC memory. The type of memory should not be a reason to choose one SSD over another.

Here is the link to he final update which includes a test result chart:

http://uk.hardware.info/reviews/4178/10/hardwareinfo-tests-lifespan-of-samsung-ssd-840-250gb-tlc-ssd-updated-with-final-conclusion-final-update-20-6-2013
 
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JohnnyLucky

JohnnyLucky

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May 30, 2007
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Things are getting interesting. I read 2 Samsung 840 ssd reviews that were just published a couple of days ago. Both had comments about TLC memory. One author stated the longevity of TLC memory is not a problem for consumers and gamers. The second author stated the TLC memory would only last 1,000 p/e cycles which is incorrect.
 
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