Low IOPS

Discussion in 'Storage & Backup' started by one80, Dec 15, 2020.

  1. one80

    one80 Member

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    Have two new Samsung 980 Pro 1TB's and am not getting anywhere near the rated IOPS or MB/s for random ...
    • Both drives are new.
    • Have optimized in Windows.
    • Running Microsoft NVME drivers (no Samsung specific ones, yet).
    • PICE running a 4.0.
    Any ideas? Am I missing something glaringly obvious?

    Benchmarks below:

    [​IMG]

    [​IMG]
     
  2. HobartTas

    HobartTas Member

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    One thing I've noticed is that the NVME's have much higher sequential speeds than regular SSD's as in GB's vs say 550 MB's but random speeds are pretty much the same, I don't know why this is so but just accept that this is the case. If you think perhaps its under performing then I suggest you compare with other reviews on the internet for this model. Its a TLC drive so after you exhaust the SLC buffer then sequential write performance isn't going to tank exactly but will drop to 2 GB's and worse for smaller models but otherwise your drive looks OK. If you need (want?) much higher random IOPS then you'll need to swap out the drive for something that can sustain a higher level indefinitely so you'll have to start looking at things like Intel's Optane series or similar with other manufacturers but these are very expensive in comparison.
     
    Last edited: Dec 15, 2020
    one80 likes this.
  3. Aetherone

    Aetherone Member

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    IOPs do seem a little on the low side. How's the temperatures while the tests are running?
     
  4. OP
    OP
    one80

    one80 Member

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    Temps stay fairly low - mid 50s.
     
  5. Aetherone

    Aetherone Member

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    That's perfectly reasonable. How do your IOPs compare to reviewers?
     
  6. wwwww

    wwwww Member

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    Your high qd randoms should be about 8x faster.

    Your disk is more than 50% full. This will affect random performance if you just filled it up but performance should return to normal after a bit.

    Check that caching is enabled in device mgmt
     
  7. HobartTas

    HobartTas Member

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    Just get the new Intel P5800X because with 1.5M random read or write IOPS that will solve anyone's problem.
     
  8. drint

    drint Member

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