Some 840 EVOs still vulnerable to read speed slowdowns

This is exactly what I experienced.......the issues is not a permanent fix in my experience:

http://techreport.com/review/27727/some-840-evos-still-vulnerable-to-read-speed-slowdowns

 

And there's a petition going on regarding this issue...

https://www.change.org/p/samsung-el...sues?after_sign_exp=member_sponsored_donation

On OC forum a number of people is reporting the fix as not being permanent as well...not good.

 

I hope this is a 840 Evo specific flaw, rather than TLC based drives in general. Either way, if the claims are true, Samsung's SSD reputation may crumble.

 

The flaw affects both the standard 840 - although Samsung has chosen to ignore this range entirely and offered no fix whatsoever - and 840 EVO.

As for myself, I'll stay away from the TLC drives from *any* manufacturer. The difference in price does not justify a prospect of running into headaches of this nature.

 

I too used to think the same thing. But due to lack of evidence in favour of all TLC drives being flawed, and a dirt cheap deal suddenly appearing, I couldn't resist picking up a SanDisk Ultra II at the time.

Seems fine so far, time will ultimately tell. *Knock on wood*

 

To each their own, by all means.

My time is way too expensive - on various levels - for taking chances in the given manner.

 

Same here, the moment they release some MLC 1TB mSATA SSD I'll sell my 840 EVO mSATA 1TB, otherwise, I wouldn't ever touch a TLC SSD even if you give it to me for free. Utter junk

 

And people used to laugh at me when I said crucial all the way. TLC is just too volatile. At least crucial is reliable and offers near performance of Samsung. TLC is JUNK, will never purchase any TLC drive. While Samsung's MLC drives are great, they are way too pricey for what they are. If I had it my way, I would still be looking to purchase SLC drives, but they don't exist anymore

 

Actually...they DO exist BUT you have to dig deep and hard to find NOS examples, and be prepared to pay through the nose, which is OK in my book. The capacities are on the smaller side of the spectrum, though.

 

My experience with crucial is junk. Haven't experienced TLC yet and not willing to chance at this time.

 

I'm sorry to hear that, I would give them another try. I have had several M4, M500, and M550 drives put into computers, none failed except one, which was quickly RMA'd and replaced.

As for SLC drives, I have a Intel X25-E I use as a backup drive. I remember somebody somewhere ran an endurance test on one of them, and it finally died after 2 PETABYTES of write cycles.

 

Seconded. My M4 has served me very well in two machines.


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Loved x-25. You could fill it to brim and negligible speed loss. Wish I could find 64gb or two but don't feel like dealing with Craig list.

 

I still have four (three 64GB and one 32GB) X-25E units in some of my old ThinkPads. You can NOT kill these things without a bullet or an axe. Two of the 64GB pieces were bought brand new in 2009, I believe...

 

I wish I had a 64gb. My 32gb is full. Make badass thumb drives. Lol.

 

what males SLC drives better than MLC?

 

Lol, I thought you would know this, since you labelled all TLC SSD's junk.

 

I know TLC is t3|-| $hi!zn!t and MLC is better but I never tried or read about SLC I thought they would be inferior since they are older tech but seems not?

Please educate t3h m3h

 

TLC is not the shiznit. That implies it's awesome. SLC endurance is. That and the way Intel designed those enterprise drives you could fill them to the max with hardly any degradation in performance. I forgot if it was over provisioned well, or the nature of the SLC beast.

 

SLC drives are superior because the cells are either on or off (two states) vs. 4 states for MLC and 8 possible states for TLC and on some SanDisk X4 memory cards, 16 states of possible values.

SLC drives are/were cooler running, more power efficient, write data faster and have much higher nand endurance. Each step below SLC exacerbates the issues with multi level nand topologies and controllers.

If SLC was available in the capacities, controller channels (10+) and price that MLC drives currently go for, everything else would be dead.

Each step that was taken away from SLC was not to improve nand performance - rather, it was simply to reduce costs.

 

Amen.

 

SLC NAND = high performance + high endurance - enterprise, industrial
MLC NAND = high density + low cost - consumer
http://www.supertalent.com/datasheets/SLC_vs_MLC whitepaper.pdf

Similar read speeds, SLC write speeds. SanDisk (nCache) and Samsung EVO (TurboWrite) came out with the pseudo-SLC layer for write caching.

 

SLC is simply the best technology, but its way way way too costly to produce in large capacities. I am thinking of picking up a couple more 64GB X25-Es to put in my older thinkpads as well

 

From where? Less than $100? I missed out on two 64gb x25e's for $150 a couple years ago because the Craigslist dude took way too long. I killed an hour and another hour wasted on eating pizza. That was about 3 years ago. Even a used x25 should have plenty of life left.

 

You've got to watch fleebay like a hawk. A 64GB version of X-25E will run you $50-70 with some luck.

There are Micron SLC SSDs as well. Own a couple of them and they are great, and came in larger capacities than the Intel ones.

Plextor made - I believe - an enterprise grade 512GB SLC drive as well, but I've never had a chance to test one.

 

How big micron SLC drives? A 128-256 thrown in a ps3 would be really nice. Do the microns fill up without any noticeable performance hit also?

 

These came in 50, 100 and 200GB. I own both 100GB and 200GB models and they are as good as X-25E in taking a beating.

I *believe* that there was a 400GB model as well, but have never seen one in real life.

 

Sweet. How much 200gb go for or what should I not pay too much. $100 tops or cheaper?

 

Expect to pay $1/GB or thereabouts.

 

Dayum.

 

The PNY Prevail Elite eMLC is rated for 10K P/E cycles. It can be fond for just under $1/GB

 

Isn't that a SandForce-based drive? If so, I'll pass...

 

Yeah, SF based and a three year old product too. Don't just pass this - stand on the gas pedal as you do so too.

 

I know what your $0.02 is on SF. It wasn't a recommendation to buy, just to showing what's out there with better NAND.

 

http://www.pcper.com/news/Storage/Samsung-Promises-Another-Fix-840-EVO-Slow-Down-Issue

Another tool coming, let's add that to your trim routine

 

HAHHA doubt it will help with these TLC junk SSD's.. Samsung screwed up big time and honestly, nothing is going to fix it..

 

Even if the new "fix" helps, the damage has been done...

Samsung will - at some point - have to prove that the new generation of EVOs is not affected by the same bug, or their SSD business will suffer.

My $0.02 only...

 

Still too early to tell. The 40nm lithography should help endurance though.

 

The issue is not about endurance though.

It's about getting the performance you paid for.

With SF, it was write performance that sucked - and no matter how great the read performance was, it didn't make up for the sucky writes.

With sTLC (Samsung TLC, including the original/plain 840 series) the read performance is sucky after a few weeks and is not offset with the strong writes.


I don't see a difference except that I actually am stuck with a few 1TB EVO's whereas I could see the SF for the junk it was before Windows had finished installing.

 

I lol'd then roll'd my eyes

 

Here is a new post from a user who had done the restoration tool and updated firmware and after a few months......baaam, performance slow again:

http://www.overclock.net/t/1507897/...-written-data-in-the-drive/2120#post_23633584

 

This has been proven time and time again.. This tool can't fix the problem.. BTW what's up with the name change? Ferris was much easier for me to write

 

Matrix and Ferris both have 6 letters ..

 

Technical reasons mate

PS: I chose the red pill

 

Lol @ technical reasons... Also don't get the point of red pill

 

watch the Matrix matey

 

http://en.wikipedia.org/wiki/Red_pill_and_blue_pill

 

I've also taken the red pill and dodged some bullets!

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Never really watched any of the Matrix movies completely so I need to do this

 

Why would you waste money on SLC for a PS3? That's far from the bottleneck and MLC is perfectly fine for such an application and easily and readily available to purchase at reasonable prices.