Samsung 840 EVO mSATA SSD Review – 1TB mSATA SSD Capacity Along With TurboWrite and Great Security Features


 SSD Testing at TSSDR differs slightly depending on whether we are looking at consumer or enterprise SSDs.  For consumer SSDs, our goal is to test in a system that has been optimized with our SSD Optimization Guide, although CPU C States have not been changed at all.  Benchmarks for consumer testing are also benchmarks with a fresh drive so, not only can we verify that manufacturer specifications are in line but also, so the consumer can replicate our tests to confirm that they have an SSD that is top-notch.  We even provide links to most of the benchmarks used in the report.

New System Shot

Enterprise testing is significantly different as we explore performance in steady state, explore drive latency, and do our best to follow SNIA test protocol.  As the Samsung 840 EVO family of SSDs are as consumer retail products, we are going to be following our regular consumer review tests and, if need be, we can later return for additional testing. For our testing today, the Samsung 840 EVO mSATA SSD will be connected to our systems Intel SATA port by way of a mSATA to SATA 3 adapter.


This new PCIe Test Bench build was the result of some great relationships and purchase; our appreciation goes to be quiet, Corsair, Crucial, Intel, EVGA and InWin for their support in our project.  Our choice of components is very narrow, in that, we choose only what we believe to be among the best available and links are provided to each that will assist in hardware pricing and availability, should the reader be interested in purchase.

PC CHASSIS: InWin D-Frame Open Air Chassisblank
MOTHERBOARD: ASUS Maximus VI Z87 MotherBoardblank
Intel Core i7-4770K CPUblank
CPU COOLER: Corsair H100i CPU Coolerblank
POWER SUPPLY: be quiet Dark Power Pro 10 1000W PSUblank
SYSTEM COOLING: be quiet Silent Wings 2 PC Fansblank
EVGA GTX 770 Superclocked with ACX Coolerblank
MEMORY: Crucial Ballistix Tactical Tracer 1600Mhz Memoryblank
KEYBOARD: Corsair Vengeance K95 Mechanical Gaming Keyboardblank
MOUSE: Corsair Vengeance M95 MMO/RTS Laser Mouseblank
ROUTER: NetGear R6300 AC1750 Dual Band Gigabit WiFi Routerblank
HBA HighPoint RocketU 1144C 4 x USB 3.0 20Gb/s HBAblank



The software we will be using for today’s analysis is typical of many of our reviews and consists of ATTO Disk Benchmark, Crystal Disk Info, Crystal DiskMark, AS SSD, Anvil Storage Utilities and PCMark Vantage.  In consumer reports, we prefer to test with easily accessible software that the consumer can obtain, and in many cases, we even provide links. Our selection of software allows each to build on the last and, also, to provide validation to results already obtained.


Crystal Disk Info provides some excellent information about the SSD itself to include its health, product information, ‘power on’ information as well as the characteristics of the SSD. We can see that the SSD is capable of TRIM as it is not grayed out as with AAM and APM.

Samsung 840 EVO mSATA 1TB SSD CDI

Samsung has also enabled us to monitor this SSD through its life cycle by way of SMART attribute identification.


ATTO Disk Benchmark is perhaps one of the oldest benchmarks going and is definitely the main staple for manufacturer performance specifications. ATTO uses RAW or compressible data and, for our benchmarks, we use a set length of 256mb and test both the read and write performance of various transfer sizes ranging from 0.5 to 8192kb. Manufacturers prefer this method of testing as it deals with raw (compressible) data rather than random (includes incompressible data) which, although more realistic, results in lower performance results.

Samsung 840 EVO mSATA 1TB SSD ATTO

Performance highs of 555MB/s read and 532MB/s write are at the top of the SATA 3 spectrum and excellent speeds to start things off.  More noticeable, however, is the fact that both read and write disk performance hits SATA 3 speeds right at the 8KB file size, something rarely seen in any SSD.


Crystal Disk Benchmark is used to measure read and write performance through sampling of highly compressible data (oFill/1Fill), or random data which is, for the most part, incompressible. Performance is virtually identical, regardless of data sample so we have included only that using random data samples.

Samsung 840 EVO mSATA 1TB SSD Crystal DiskMark

Performance results a bit lower than we saw in ATTO is typical of crystal DiskMark and this assist in our reasoning to providing several separate benchmark tests.  We can also see that, once the Samsung 840 EVO mSATA SSD is formatted, total capacity available to the user is 932GB.


  1. blank

    Hard work at the end of the year . Thats one nice ssd it will give a lot more power to laptops as well as space, but the price is still too high. I like to see is 2-3 in NBs and no hdds!

    • blank

      I don’t know… I can see this in the $500’s in a month or two from now…just as we see the notebook EVO at times.

      • blank

        I think it will be 10-15% more expensive, but whatever that say it’s still a lots of money just for storage. For that much money , more people will buy ordinary PC/NB based on HDDs. Lets say $300 for 1TB is quite reasonable price, at least thats what i will be able to pay and not regret it !

        Happy New Year TSSDR in advance !

  2. blank

    I bought the Samsung ssd 1tb. The drive is awesome. The Magician software did not work for me. My ssd would only be seen as NON OS drive. I had to clone my hhd to ssd using third party software outside my OS. It now works. Samsung does not offer support for these types of issues.

    • blank

      Sign up to our forums and we can walk you through this. Is your SSD recognized in the BIOS? You may have to initiate it in Win 7 before all else falls in place. I dont see it available yet; where did you get yours?

  3. blank

    When is this going to be released? When and where can I get my hands on a full TB of storage for my Ultrabook? Personally, I probably would feel that it was expensive if i cared about the price at all. I will pay for it and not bat an eye. I am sure that there are more of me out there, too. THanks for the great review. I AM SOLD

  4. blank

    K……Ive seen a ton of reviews for these new Msata 840 EVO drives now for well over a month…… when the f * * k are these things going to be released for sale? Was supposed to be end of last month, then last week, then this week.,……………..getting obnoxious……..

  5. blank

    Will these be available retail or OEM initiall? I plan to buy a new custom gaming laptop very soon.

  6. blank

    When is this available?

  7. blank

    Did notice trim not working correctly on the new evo mSata drive?

  8. blank

    When can we see 4TB SSD in 2.5″ form? Since 840 Evo mSATA has 4 NAND packages to make 1TB, so I guess they can easily make 4TB 2.5″ SSD using 16 NAND packages…..

  9. blank

    what happens to the files in the turbowrite buffer if a blue screen of death/system failure occurs? are any of you owners of an evo msata or 2.5″ drive and have had a system failure or bsod? if so, what happened to the files?

  10. blank

    Hi thank you for this great review! I am trying to put together a laptop and I got no idea about the difference between ssd and msata besides their size. Should I pick 840 evo msata ssd 500gb over 840 evo ssd 500gb? Are they any different besides the size?

    • blank

      There is no difference with respect to performance. What I might do is to install the EVO mSATA in your laptop and use the original HDD solely as secondary storage. Don’t forget to use our links of shopping through Amazon…for any purchases!

Leave a Reply

Your email address will not be published. Required fields are marked *