Samsung SSD 950 PRO 512GB M.2 NVMe PCIe SSD Review

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ATTO & CrystalDiskMark

ATTO v3.05

ATTO is one of the oldest drive benchmarks still being used today and is still very relevant in the SSD world. ATTO measures transfers across a specific volume length. It measures raw transfer rates for both reads and writes and places the data into graphs that can be very easily interpreted. The test was run with the default runs of 0.5KB through 64MB transfer sizes with the total length being 256MB.

ATTO – Overlapped I/O:

atto

Benchmark Results: ATTO showed Samsung SSD Pro 950 512GB M.2 drive maxing out at 2,606 MB/s read and 1,556 MB/s write in the standard overlapped I/O benchmark. Samsung rates the SSD Pro 512GB drive as having up to 2,500 MB/s read and 1,500 MB/s write with regards to sequential performance, so it looks like those ratings are slightly conservative.

 

CrystalDiskMark 5.0.2 x64

CrystalDiskMark is a small benchmark utility for drives and enables rapid measurement of sequential and random read/write speeds. Note that CDM only supports Native Command Queuing (NCQ) with a queue depth of 32 (as noted) for the last listed benchmark score. This can skew some results in favor of controllers that also do not support NCQ.

cdm

Benchmark Results: The Samsung SSD 950 Pro 512GB drive topped out at 2599 MB/s read and 1531 MB/s write on the sequential test when we ran the drive on the CrystalDiskMark storage test with the default settings. The 4K scores were right at 59 MB/s read and 230 MB/s for the write speed. The incompressible data test is representative for the performance you’ll see when moving around movies, music and photographs. We also ran the 0Fill test and found that the sequential and random read/write performance of the drive essentially remained the same.

Let’s look at some other benchmarks!

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  • Can this be used to boot win7 in asus rampage 4 extreme (x79) board? If yes does it supports both legacy and uefi installs?

  • When I built my new system it required me to goto win10 which has and included NVMe driver. I’m happy, and will be adding one to my Gigglebyte GA-Z170XX-UD5 Mobo when the price starts coming down… feel free to dm me if you have questions. Like the man sez, BE SURE YOUR BOARD SUPPORTS NVMe before you buy!

  • GrandBro

    Do you simply plug this into a PCIe? I understand some newer MB have a M.2 slot, so it’s confusing. The Intel 750 for example has what looks like a card (PCIe version) and one that looks like SATA/SAS. I’d buy one of these to fit on a 1 year old MB without M.2 if it will work.

    • No, you can’t just plug it into a PCIe slot. You’re going to need an
      adapter. The Addonics one seems to be well-regarded. If you intend to use the SSD
      as a boot drive, make sure your mobo supports it.

      Other than those caveats, you should
      be fine.

      • Κωνσταντίνος Κ.

        he actually needs a UEFI bios with capability of booting into nvme 😛

        P.S. Else it can be only used as a secondary drive

        • Did you even read my comment???

          “If you intend to use the SSD
          as a boot drive, make sure your mobo supports it.”

          Jesus Christ…

        • Κωνσταντίνος Κ.

          Did you even read what I wrote? Jesus Christ

        • Yep, but you didn’t read what I wrote. Here it is a third time, goof. Have someone read it to you, if you’re incapable.

          “If you intend to use the SSD
          as a boot drive, make sure your mobo supports it.”

  • Minkyu Kim

    If you finding a tool to get SMART with Samsung NVMe devices, Naraeon NVMe Tools can be reasonable option.
    http://naraeon.net/en/latest-nvme-tools

  • z3razerviper

    I am not going back to anything that does not have eDrive support its awesome guess i will be waiting a while.

  • Austin Rowan

    Being a future-minded fellow, hearing about this tricky warranty has ensured me not buying this product nor recommending it to the myriad of people in my life who ask me for computer advice.

    • xanuser

      what would be tricky is finding an actual user that would ever approach 200TB of writes in under 5 years.

  • Gary Barnet

    I have been using a XP941 for a while now and found it throttled all the time due to overheating. But I bought a small heatsink and fan (originally designed for the second edition Raspberry Pi as part of a kit) and mounted the fan/heatsink onto the controller and another heatsink onto the other smaller chip next to it and problem solved. I should also say that I have a 200mm fan blowing directly over the area (and 3 other 140mm intake fans nearby as well).
    Heat is a huge problem for these M.2 drives (even companies like Noctua have noted this) and I have seen temperatures of 110° C or more (max being around 113°C) and that is just copying some files over. And the SM951 was not that much different. So to is this one. Even though they heat up, at least the memory chips don’t get anywhere near as hot, it is the controller that has to do all the heavy lifting that suffers the most.

    Get the heat under control and these are great.

    Just wondering how these will go squashed up in a notebook or similar.

  • Ottoore

    Thank you Nathan for the deepened tests about thermal problem. I wrote you about this when they were presented.
    I have a question: you say you solved the problem with a 120mm fan. But 512 ssd has memories on both sides. Obviously there’s no cooling on the “dark side”: do you think memories on the frontal side have a ” sort of priority “? Sorry for my bad english, i’m not native

    • Nathan Kirsch

      Your edit is correct and there are images of the front and the back of the SSD 950 Pro 512GB on page 1 of the article. The board components are on just one side, so that design should be better for those wanting to use their motherboards built-in M.2 slot that sits flush with the board.

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