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  • wingless - Thursday, January 09, 2014 - link

    1TB in that small package?! 2014 is really the FUTURE! This will turn my laptop into a monster. Reply
  • Samus - Thursday, January 09, 2014 - link

    What's interesting is it isn't even worth considering these models UNLESS you go with 1TB, because all the other capacities aren't nearly price competitive with the competition. Fortunately for Samsung, there is no competition at the flagship capacity, so they could charge whatever they want. Reply
  • Kristian Vättö - Friday, January 10, 2014 - link

    Like I said, those are MSRPs, not street prices. The MSRPs of the 2.5" EVO are only $10 less but as you can see, the street prices are significantly lower. Reply
  • TheSlamma - Wednesday, January 15, 2014 - link

    it's the present Reply
  • jaydee - Thursday, January 09, 2014 - link

    Hard for me to justify the 48-55% price premium of the 840 EVO over the Crucial M500 (250 GB and 500 GB versions). At some point "faster" SSD's hits diminishing returns in "real life" scenario's... Reply
  • fokka - Thursday, January 09, 2014 - link

    "I wasn't able to find the EVO mSATA on sale anywhere yet, hence the prices in the table are the MSRPs provided by Samsung. For the record, the MSRPs for EVO mSATA are only $10 higher than 2.5" EVO's, so I fully expect the prices to end up being close to what the 2.5" EVO currently retails for."

    meaning: the prices will go down, once broadly available.
  • emn13 - Thursday, January 09, 2014 - link

    On the desktop? Given the lack of power-loss protection, the 840 EVO is probably a worse choice even at comparable prices.

    But on mobile? Sudden power loss is less likely (though background GC complicates that picture), and the 840 EVO's lower power draw, particularly in idle, extends battery life.

    I'm pretty sure I'd opt for the 840 EVO on a battery-powered device, assuming the price difference isn't too great.
  • nathanddrews - Thursday, January 09, 2014 - link

    If it helps your decision at all, I just upgraded my wife's notebook (Lenovo Y580) from a 2.5" 250GB Samsung 840 (not pro) to an mSATA 240GB Crucial M500 (and then put the stock 750GB HDD back in) and it's phenomenal. The M500 feels snappier, but that could just be due to restoring the existing Windows image onto a clean drive. Either way, it was a great $130 upgrade.

    If you have a free mSATA port on your notebook, it's a no-brainer to get an SSD for it.
  • Solid State Brain - Thursday, January 09, 2014 - link

    The trim behavior might be something introduced with one of the latest firmwares. I have a Samsung 840 250GB and I recently tried doing some steady state tests. After hammering it with writes, trim does not restore performance immediately. However with normal usage/light workloads, or keeping the drive idle, however, it will eventually (in a matter of hours) return back to the initial performance.

    I guess this is some kind of strategy to improve long term wear/stability/write endurance. Maybe some sustained write protection kicks in to avoid writing immediately at full speed after trimming the free space.
  • Solid State Brain - Thursday, January 09, 2014 - link

    PS: where's the edit button to fix typos/errors, etc, when needed?? :( Reply
  • ahar - Thursday, January 09, 2014 - link

    Can we also have one for the article? ;)
    " the number's you're seeing here..."
  • Unit Igor - Saturday, January 11, 2014 - link

    Tell me Kristian please would EVO 120GB msata have any advantage over EVO 250gb msata in longer battery life when you compare power consuptipon vs. disk busy times and mb/s.I use my ultrabook only for mails ,somtimes wathing movies and surfing.I dont need more then 120GB SSD but i am willing to buy 250Gb if it would give me more battery life.What i wanted to see in your benchmark is MobileMark 2012 because msata is for laptops and that is where battery life play big role Reply
  • guidryp - Thursday, January 09, 2014 - link

    "endurance is fine for consumer usage"

    Thanks for your opinion, but I'll stick with MLC.

    Do you also think Multi-TB HDDs are fine for consumer use? Since HDDs went over 1TB, they have been failing/wearing out for me regularly. I am sure you can find some theoretical numbers that say these are "fine for consumer usage" as well.

    There is a big trend to bigger sizes but lower reliability. That trend can get stuffed.

    Samsungs advantage of Being the only TLC player strikes me as a reason to avoid Samsung, so I can avoid TLC and decreasing endurance that goes with it.
  • Kristian Vättö - Thursday, January 09, 2014 - link

    That's just your experience, it's not a proof that over 1TB hard drives are less reliable. We can't go out and start claiming that they are less reliable unless we have some concrete proof of that (failures on our end, statistics etc).

    The same applies for TLC. All we have is the P/E cycle number and frankly it gives us a pretty good estimation of the drive's lifespan and those numbers suggest that the endurance of TLC is completely fine for consumer usage. Or do you think our calculations are incorrect?
  • MrSpadge - Thursday, January 09, 2014 - link

    And add to that that the P/E cycles are usually conservatively estimated by manufacturers. The SSD-burn-tests at XS sometimes exceed the ratings significantly. Reply
  • guidryp - Thursday, January 09, 2014 - link

    I think if you examine any aggregate source of reviews like Newegg you will see a significant drop in drive satisfaction do to early failures, since drives went over 1TB. So it isn't just some personal fluke that half of my >1TB drives have failed worn out, so far.

    I am really sick of this trend of declining reliability being sold as good enough. If TLC is "good enough" I will take MLC with 3X "good enough" unless the we are talking about 1/3 the price for TLC.

    Weren't the Samsung 840s failing in days for Anand last year?

    Unlike reviewers, I use my products until they fail, so reliability matters a LOT, and is something that is going in the wrong direction IMO.
  • Kristian Vättö - Thursday, January 09, 2014 - link

    Reliability is not the same as endurance. TLC has lower endurance, that's a fact, but it's not less reliable. Endurance is something you can predict (in the end all electronics have a finite lifespan) but reliability you cannot since there's a lot else than just NAND that can fail. I would claim that today's SSDs are much more reliable than the SSDs we had two years ago -- there haven't been any widespread issues with current drives (compared to e.g. early SandForce drives).

    Yes, we had a total of three 840 and 840 Pros that failed but that was on pre-production firmware. The retail units shipped with a fixed firmware.

    This isn't a new trend. Historically we can go back all the way to 1920s when light bulb companies started rigging their products so the lifespan would be shorter, which would in turn increase sales. Is it fair? Of course not. Do all companies do it? Yes.

    I do see your point but I think you're exaggerating. Even TLC SSDs will easily outlive the computer as a whole since the system will become obsolete in in a matter of years anyway if it's not updated.
  • gandergray - Saturday, January 25, 2014 - link

    For information concerning hard drive failure rates that is more objective, please see the following article: . Reply
  • althaz - Thursday, January 09, 2014 - link

    TLC is NOT a trade off in reliability, but a tradeoff in longevity.

    Longevity is measured in write-cycles and with heavy consumer loads TLC drives will still last for many years.
  • bsd228 - Thursday, January 09, 2014 - link

    Other than the fact that they both store data, SSDs and HDDs have nothing in common, so it's silly to presume a problem that isn't really what you think it is in the first place. HDDs got dirt cheap as we cross the TB threshold and with it went diligent QA. You want 2TB for $80, you're going to get a higher defect rate. And going to 4 or 5 platters just increases the failure points, but the razor thin margins are the culprit here.

    In contrast, a bigger SSD just means either more chips, or higher density ones. But 16 chips is nothing new, and since there are no mechanical parts, nothing to worry about. Aside from OCZ, the SSD track record for reliability has been pretty solid, and Samsung (and Intel) far better than that. If you want to stick to 256G in your laptop out of a silly fear of TLC, you're just hurting yourself. The Anand guys have already shown how overstated the wear issue has become.
  • Chubblez - Thursday, January 09, 2014 - link

    I have 8 5 shelf SAN's (EMC AX4-5f) all full of 1 and 2TB drives that would disagree with you.

    I also have 4 256G EVO's that get hammered pretty hard in an HP server, but I can't speak to the very long term effects. Initial data tells me your wrong on that as well.
  • Death666Angel - Sunday, January 12, 2014 - link

    I have 8 2TB drives since October 2011 running in 2 RAID 5 in my file server (consumer grade Samsung, WD, Hitachi). I have 2 1TB 2.5" drives running since 2 years in my desktop. I have a 1TB and a 1.5TB 3.5" drive for well over 4 years in external enclosures. Not one failed. So let's pit anecdotal evidence against anecdotal evidence, shall we? Reply
  • dgingeri - Thursday, January 09, 2014 - link

    I'd like to see Samsung put out a 500Gb or 1TB SSD with a m.2 PCIe connection. That with an adapter for two m.2 PCIe drives on a PCIe x4 card would make my year. I'd finally be able to get all the drives out of my system and bring it down to just motherboard, cards, H100, and power supply. Reply
  • romrunning - Thursday, January 09, 2014 - link

    Why does the Samsung 840 Pro score really badly in the "Destroyer" tests, but are at the top of pretty much every other benchmark shown here? Reply
  • Kristian Vättö - Thursday, January 09, 2014 - link

    Because it only has 7% OP by default, whereas most drives have 12% nowadays. In steady-state even small differences in OP can play a major role. Reply
  • blanarahul - Thursday, January 09, 2014 - link

    Do you think it would be beneficial to 'not' have Turbowrite at or above 500 GB and focus more on parallism?? I ask this because a 250 GB 840 Evo achieves about 260 MB/s after it runs out of TW cache. So I would expect the 500 GB or above Evo to atleast reach 500 MB/s. Reply
  • Solid State Brain - Friday, January 10, 2014 - link

    Question: do Samsung 840 EVO SSDs have less OP than the previous 840 ones, since a percentage of the reserved space is now used for the fixed SLC cache area/TurboWrite?
    With trim enabled, that should not be a problem (as it makes the drive have "dynamic OP" with free space), but under intense workloads it might, if it's the case.
  • Kristian Vättö - Friday, January 10, 2014 - link

    Technically yes. The 840 actually has slightly better IO consistency, which the higher OP explains.

    (The title reads Intel DC S3700 but that's because I use it's graph as a basis of other graphs to guarantee that they're all the same size)
  • romrunning - Friday, January 10, 2014 - link

    That's interesting. I guess that means if you manually over-provision the 840 Pro, then it should dominate the Destroyer benchmark as well. It would be nice to test that scenario out. Reply
  • Kristian Vättö - Friday, January 10, 2014 - link

    Due to the nature of the Destroyer, it's unfortunately not possible to assign the test for a certain LBA range (i.e. add OP). Reply
  • 5mpx - Friday, January 10, 2014 - link

    I recently picked up a Samsung 840 Pro 120GB for around $115 to replace the absolutely dreadful Samsung 1TB 5400RPM w/ 8GB SanDisk iSSD ExpressCache (which also seemed absolutely useless) on mainboard.

    Couldn't be happer - my Core i7 actually has to do some work now instead of sitting around waiting on the drive to feed it data.
  • dgingeri - Thursday, January 09, 2014 - link

    I bet a ship from the future crashed in Seoul, and Samsung is out there reverse engineering technology from it to dominate the technology market. ;) Reply
  • Jarn - Thursday, January 09, 2014 - link

    With these speeds, I just go with whichever of the seemingly most reliable brands are cheapest. Reply
  • BigAnvil - Friday, January 10, 2014 - link

    Please, oh please, oh please, oh please... let someone make a miniature RAID box for mSata SSDs!!!!!!!!! Room for five mSata SSDs like this with striping and either a Thunderbolt 2 or USB 3.1 interface so we can all have multi-Gigabyte/sec transfer rates that can fit in ur shirt pocketses. Reply
  • Brenderick - Saturday, February 15, 2014 - link

    Not five, but it will cram a pair of them under a RAID controller into a 2.5 inch package. You could, in theory, RAID three of these together in a NAS and you would have what you are describing.
  • a1exh - Friday, January 10, 2014 - link

    Samsung are not the only Vertically Integrated provider in consumer SSD space. Toshiba is also. Reply
  • Kristian Vättö - Friday, January 10, 2014 - link

    Toshiba doesn't make their own controllers, they are just rebrands. Reply
  • Brenderick - Saturday, February 15, 2014 - link

    Lacks controller IP. Reply
  • unclebump2013 - Friday, January 10, 2014 - link

    it does exist. Reply
  • extide - Friday, January 10, 2014 - link

    No, that's for mSATA, not M.2 Reply
  • Brenderick - Saturday, February 15, 2014 - link

    mSata was what the commenter wanted. Reply
  • MoFoQ - Friday, January 10, 2014 - link

    same hardware?
    The mSATA version has 4 NAND packages.
    The 2.5" version has 8.

    Sure, the number of dies total might be the same.
    It's like comparing two houses of the same square-footage....except one of them is a two-story house and the other, a single-story one.

    With that said, it is an interesting development for mSATA SSDs.
    I can't wait until other manufacturers come to market to help drive the price down.
  • emvonline - Friday, January 10, 2014 - link

    16 die packages are possible at all NAND suppliers and it is relatively straight forward to implement. the issue is usually that there is minimal demand for anything requiring it. What percentage of the market is 1TB? I think we are talking less than 3% above 512G for consumers. let me know if I am wrong.

    TLC is great for Samsung product margins. so far it hasn't led to a cost decrease for consumers.

    Samsung's execution is the amazing part. they have good (or great) products in every market at every density. And they have the most aggressive marketing campaign. No one else has been able to achieve this.
  • Marrixster - Saturday, January 11, 2014 - link

    Thanks very much indeed for this review. I already have 2 Samsung PM851 512GB (MZMTE512HMHP-00000). And, just prior to reading this review ordered the 1TB model (MZ-MTE1T0BW).
    The price is AUD822.99 (, very expensive. However, the convenience of this form factor justifies cost from my point of view.
    Now, it's simply a matter of deciding which lappy it gets installed in.
  • Unit Igor - Saturday, January 11, 2014 - link

    Tell me Kristian please would EVO 120GB msata have any advantage over EVO 250gb msata in longer battery life when you compare power consumption vs. disk busy times and mb/s.I use my ultrabook only for mails ,sometimes watching movies and surfing.I dont need more then 120GB SSD but i am willing to buy 250Gb if it would give me more battery life.What i wanted to see in your benchmark is MobileMark 2012 because msata is for laptops and that is where battery life play big role. Reply
  • philipma1957 - Sunday, January 12, 2014 - link

    the new gigabyte brix with the i7 4770r cpu 16th ram and a 1tb mSata would be really nice gear. Reply
  • nogoms - Monday, January 13, 2014 - link

    You start off with the claim that "Samsung is in a unique position in the SSD market. It’s the only company in the consumer SSD business with a fully vertically integrated business model and zero reliance on other companies."

    This is, however, not actually true. SK Hynix is in a similar position, as they've had their own controllers, NAND, and DRAM since their purchase of LAMD a year and a half ago. Admittedly, they hadn't actually released a completely in-house SSD using a LAMD controller until late last year with the release of the SH 920 series. In fact, the Surface Pro 2 uses an SK Hynix mSATA SSD (with a LAMD controller), as noted in Anand's review and iFixIt's teardown. SK Hynix also doesn't appear to be making the SH920 series available in retail outside of Asia, though Super Talent's Supernova3 series is available in retail in North America (from the likes of SuperBiiz and various third-party sellers on Amazon and Newegg) and appears to be rebranded 2.5" SK Hynix SH920 series drives.
  • Kristian Vättö - Monday, January 13, 2014 - link

    I did mention SK Hynix and LAMD later in the article:

    "Sure, Samsung isn't the only NAND manufacturer but it is the only one with a consumer orientated controller IP (although SK Hynix owns LAMD now but that deal has yet to materialize in a product)"

    The thing is, while Hynix does have a LAMD based SSD, it's the same controller that other's are using. It's possible that Hynix has contributed to the firmware but it's not a fully in-house designed platform (the controller was designed way before the acquisition took place).
  • nogoms - Monday, January 13, 2014 - link

    That statement is also false, as SK Hynix's LAMD controller *has* materialized in products, as I pointed out in my previous post--they're available in complete systems like the Surface Pro 2 worldwide as well as standalone at retail (in East Asia). Also, it's disingenuous to say it's not fully in-house when the controller and firmware were designed and written by teams currently in the employ of SK Hynix, and even if one were to accept your contention that such an arrangement is not "fully in-house designed," the opening statement of the article does not all of a sudden become true, as Samsung is still not the only manufacturer with "a fully integrated business model" or "zero reliance on other companies." Reply
  • Hrel - Monday, January 13, 2014 - link

    any idea when we'll be able to get 512GB drives for under $200? Reply
  • spejr - Tuesday, January 14, 2014 - link

    Why do people still use mSATA? It might not make a difference for IOPS, but when opening a program the higher sequential read of PCIe would be a benefit. The NAND could supposedly go faster than 540. Reply
  • Kristian Vättö - Wednesday, January 15, 2014 - link

    Because the support for PCIe is very limited. There are only a handful of laptops that use PCIe SSDs (and some of the have a proprietary connector like the MacBook Air) and in the desktop world all PCIe SSDs are currently just two or more SATA SSDs in RAID (though that will change during the next few months). Reply
  • bbordwell - Wednesday, January 15, 2014 - link

    Any chance we could get an in depth review of Samsung's RAPID now that it is available on both the EVO and the PRO? I am curious if it would have a larger impact for writes on the PRO than the EVO since the PRO does not have the SLC write cache. Reply
  • RShack - Friday, January 17, 2014 - link

    What % of your responses are to posters who evidently haven't bothered to even read the dang article? Reply
  • swiftdimension - Friday, January 17, 2014 - link

    Just curious, if you guys connect a mSATA drive by letting it dangle connected to power and a SATA cable since the Asrock z68 Pro 3 doesnt have a mSata slot? Reply
  • Kristian Vättö - Saturday, January 18, 2014 - link

    We use an mSATA to SATA 6Gbps adapter. Reply
  • Qlaras - Friday, January 17, 2014 - link

    So I was considering ordering one of Gigabyte's sole AMD Brix - GB-BXA8-5545, and a 180-240GB mSATA SSD. (Now that the Brix is FINALLY released)

    Torn between waiting for the Samsung 840 EVO mSATA and just paying the premium for an Intel 525 and getting it now.

    The Samsung has newer features/tech, and the price will (probably) be lower - MSRP matches what the 525 is going for now though, and the 525 comes with a 5-year warranty, versus 3 on the EVOs.

  • Kristian Vättö - Saturday, January 18, 2014 - link

    Crucial M500 should be a good compromise -- it's available now and the pricing is competitive. Reply
  • Coup27 - Saturday, January 18, 2014 - link

    Did that maximum bus speed vs latency graph really come from Micron? It's clearly been drawn in MS Paint. The Y axis isn't even vertical!

    Good article nevertheless.
  • Kristian Vättö - Sunday, January 19, 2014 - link

    Yup, here's the presentation (slide 9): Reply
  • GreenThumb - Monday, February 10, 2014 - link

    How would I know if a new laptop w/ Haswell processor could accept one of these drives? Reply
  • mdevlin - Friday, February 14, 2014 - link

    One important point that was not captured in the review is thermal limiting. Our experience is that when doing large transfers (200GB+) the 1TB msata 840EVO starts to slow down and will sometimes run at 100MB/s or slower whereas we have not had this problem with the 2.5" 1TB 840 EVO. Doing a better job of cooling (even just fanning the air above a drive under test) improves mSATA performance. Not a big deal if you do not do large contiguous writes. We have never had any problem with Read performance. Reply
  • tomb18 - Monday, March 10, 2014 - link

    Has anyone actually bought one of these 1TB drives?
    I have bought 2, from two different locations about 6 weeks apart. If you copy a large quantity of data (over 400gB) from another disk to one of these drives, they will fail during the write. They disappear completely, are not visible at all unless you do a reboot. Thje 500GB works fine.
    I have verified this now on two different SATA3 controllers and on three different Windows 7 computers. Both 1TB drives fail on write.
    RMA is in process with Samsung. I was told it sounds like a controller issue on the SSD.
  • mdevlin - Friday, March 14, 2014 - link

    We have 6 of the 1TB mSATA drives and have no problem with large writes (up to 800GB) except the thermal issues mentioned above. With forced air cooling the performance is sustained throughout the transfer. without cooling speeds drop to less that 100MB/sec and it will actually pause and then resume (but not fail). we have had no failures after many full disk writes. Reply
  • mdevlin - Tuesday, April 08, 2014 - link

    It seems that Samsung has updated the firmware on the 1TB mSATA 840EVO. Now when the mSATA drive overheats it throttles by alternately halting for a second, then running full bore for a second. This is less disconcerting than the previous version which would slow down for long periods or even stop for 10-20 seconds. Reply

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