Micron RealSSD P320h Review: A PCIe Drive Capable Of 3.2 GB/s

Sequential Performance

When it comes to sequential performance, the P320h lives up to expectations...so long as you throw enough operations at it. Normally, we use ATTO for evaluating sequential performance across transfer sizes. This causes a problem for us, though. ATTO's low queue depths negatively affect the P320h's outcome. At the utility's maximum queue depth of 10, Micron's drive goes severely underutilized.

Switching over to Iometer and a queue depth of 32 gives us performance results closer to what we were expecting. Although we weren't quite able to coax 3.2 GB/s out of it, we consistently saw more than 2.8 GB/s, peaking above 3 GB/s.

Sequential write operations result in a similar tale. Although the P320h responds better to writes at lower queue depths than it did to reads, dipping below 32 outstanding operations causes the P320h to hit its peak moving 2 MB blocks (as opposed to 128 KB blocks). 

Create a new thread in the US Reviews comments forum about this subject
This thread is closed for comments
44 comments
    Your comment
    Top Comments
  • wolley74
    my wallet just had a heart attack, this thing would be freaking amazing to have
    14
  • bawchicawawa
    mayankleoboy1i dont see this as the future of consumer SSD's, just like a 16 core CPU is not the future of consumer CPU's.



    Such an apples to oranges comparison...
    12
  • rdc85
    drwho1$10 dollars per GB.... LOL


    It using SLC and geared towards enterprise market...

    IMO it understandable price...
    10
  • Other Comments
  • wolley74
    my wallet just had a heart attack, this thing would be freaking amazing to have
    14
  • mayankleoboy1
    i dont see this as the future of consumer SSD's, just like a 16 core CPU is not the future of consumer CPU's.
    -18
  • bawchicawawa
    mayankleoboy1i dont see this as the future of consumer SSD's, just like a 16 core CPU is not the future of consumer CPU's.



    Such an apples to oranges comparison...
    12
  • memadmax
    Eliminating the SAS controller is the logical way to have these pci-e based ssd drives...
    Kinda surprised something like this didn't come out first as it makes more sense....
    9
  • mayankleoboy1
    bawchicawawaSuch an apples to oranges comparison...


    really ? Increasingly, performance is basically dependent on extracting parallelism. Whether in storage or in CPU performance.
    Desktop/Mainstream users just dont do so much in parallel that they can fully use all the hardware.
    -9
  • JOSHSKORN
    mayankleoboy1i dont see this as the future of consumer SSD's, just like a 16 core CPU is not the future of consumer CPU's.

    I see a purpose for 16 core processors. How are we going to otherwise be able to run Crysis 6?
    5
  • mayankleoboy1
    JOSHSKORNI see a purpose for 16 core processors. How are we going to otherwise be able to run Crysis 6?


    Use a 5000 core GPU ?
    7
  • youssef 2010
    ArticleAlthough read performance is out of this world, the RealSSD P320h's write performance isn't nearly as spectacular. That's not to say the drive doesn't do well; it's just not as impressive after looking at those massive read numbers. read performance was out of this world, the write performance wasn't nearly as spectacular. Now, that's not to say that the P320h doesn't perform well, it's just not as impressive as the read results


    ????????!!!!!!!!!!!
    2
  • abbadon_34
    After all these years it's nice to see the OCZ Revo at least mentioned. Considering a bootable PCI-E x4 SSD can be had for under $200 for over 5 years now, and is on it's 4th+ generation, one can only wonder why it's been ignored for so long.
    9
  • Marcus52
    Micron deserves a pat on the back for this one!

    Thanks for the review, love to see this kind of advancement and a peak into the future new hardware brings with it, even if it isn't directly applicable to me at this point in time.
    6
  • goodguy713
    because the revo drive is a picky bastard that only plays nice with certain hardware.. i have a revo drive 3 and i love it but at the same time its a love hate relationship
    4
  • Reynod
    Its still not fast enough ... I'm not impressed.

    Can you put two of them in RAID0 ??

    Signed,

    Bonkers :)
    -3
  • drwho1
    $10 dollars per GB.... LOL
    -10
  • rdc85
    drwho1$10 dollars per GB.... LOL


    It using SLC and geared towards enterprise market...

    IMO it understandable price...
    10
  • Fulgurant
    mayankleoboy1i dont see this as the future of consumer SSD's, just like a 16 core CPU is not the future of consumer CPU's.


    Eh, depending on how far in the future we're talking about, neither of those statements is iron-clad. In the case of a 16-core processor, it's pretty much guaranteed that we will eventually see one in the consumer space, at mainstream prices. Whether the extra cores on that CPU will offer any compelling benefit to the mainstream consumer is an open question, but at least those cores do offer meaningful performance benefits to hardcore multi-taskers.

    Similarly, current consumer-grade SSDs offer very nearly instantaneous responsiveness already -- unless the user attempts to perform multiple disk-intensive tasks simultaneously. But who knows what the future holds? You could make a case that current enterprise-grade SSDs (or something similar to them) are far more likely to make a meaningful mark on the consumer market years from now than 16-core processors, because the benefits of CPU parallelism are limited in principle. By contrast, the benefit of storage speed is only limited by the speed of the components that rely on it; storage speed applies both to singular and parallel tasks.

    That said, I agree with your sentiment if not with the particulars of your argument: my gut reaction to the article was that although 3.2 GB/sec is a very impressive number, I already feel like I'm flying at the ~0.5 GB/sec (at best) that I get out of my Intel 330. From the consumer perspective, performance comparisons between different SSDs almost always seem to me materially irrelevant, so it's hard to get too excited about the performance of an enterprise-grade SSD, even in the abstract.

    Still, this is a worthy review of an interesting product. Appreciate the insight.
    6
  • oxxfatelostxxo
    This is a pointless waste of money, for less You can get a high end Raid card and enough ssds to have a read and write over 3gb/s as well as more storage, oh and the best part, Redundancy if wanted and the fact that a failure doesnt mean a multi thousand dollar loss.
    -6
  • freggo
    rdc85It using SLC and geared towards enterprise market... IMO it understandable price...


    1989... 1MB of memory chips (card extra) was $100 wholesale !
    We sold them by the boat load for Amiga computers.

    And yes, that is 1 MegaByte...
    an 8MB card retailed for $1,800 (and that's in 1989 Dollars).
    3
  • Andy Chow
    Thank you for the nice metrics, like $/PB-Written. It's the type of useful information lacking from many reviews.
    2
  • drewriley
    youssef 2010????????!!!!!!!!!!!
    Fixed, thanks for the heads up!
    0
  • drewriley
    Andy ChowThank you for the nice metrics, like $/PB-Written. It's the type of useful information lacking from many reviews.

    I am glad you find it useful, it is something that I have always cared about and tested because I have been burned in the past.
    2