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Samsung SM951-NVMe Versus AHCI Versus SATA 850 Pro

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Sequential Write

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Both SM951s generate nearly the same performance in our sequential write test. Here, the bottleneck is the flash, and not the protocol. Many hope that Samsung introduces a PCIe-based NVMe client SSD with 3D V-NAND at its SSD Global Summit, an annual gathering for the press it usually puts on in July. If that product comes to pass, we will finally get to compare Samsung's 1xnm MLC to 3D V-NAND without SATA interfering.

24 Comments Comment from the forums
  • killabanks 15 June 2015 12:21
    Glad to see that some aspects of computing are getting rapid improvements.
    Reply
  • Amdlova 15 June 2015 15:33
    I will stick with 2.5" For Heat problems lol
    Reply
  • Amdlova 15 June 2015 15:42
    hpv-2560 is rated 1.9A and the another one VPV-2560 is 2.7A Maybe you guys need test the power consumption.
    Reply
  • atheus 15 June 2015 16:22
    I find the preamble about comparing these M.2 drives to regular SATA drives a little odd. When SSD's first came out, of course they were compared to HDD's because that was precisely the question of the moment — how much more performance can one expect from the more expensive SSD's. With this new generation of SSD's, it's only natural to want to see them compared to the old, cheaper stuff. How else are we going to evaluate whether it's worth it to upgrade?

    If it only resulted in an extra 10% on a real-world test, then it wouldn't make any sense to spend double or more on a NVMe drive. With these solid numbers, though, the massive performance leap will be well worth the cost for those who can afford it.
    Reply
  • TechyInAZ 15 June 2015 18:34
    Looks great! NVMe is defiantly the ideal solution for users that need high speed/responsive storage.

    I wish you guys would of compared this NVMe SSD to the Intel NVMe SSD that just came out.
    Reply
  • CRamseyer 15 June 2015 19:27
    The Intel SSD 750 and the Samsung SM951-NVMe will show up side by side soon in another review.
    Reply
  • barnyrubble 15 June 2015 21:42
    What about the rest of the system in which they were tested?
    Reply
  • CRamseyer 16 June 2015 04:32
    Test systems: http://www.tomshardware.com/reviews/how-we-test-storage,4058.html

    All three drives were tested in the PCIe test system. They are the only systems setup for testing queue depths beyond 32.
    Reply
  • dwnelson 16 June 2015 04:55
    I'm sad the real world chart is misleading. If you show seconds instead of MB/s you'd see it doesn't justify the cost. Sad.
    Reply
  • dark_wizzie 16 June 2015 06:31
    The Intel SSD 750 and the Samsung SM951-NVMe will show up side by side soon in another review.
    That is a natural comparison and I look forward to reading it.
    Reply