Lexar hits 7 GB/s with new M.2 PCIe 4.0 SDD

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Dec 16, 2019.

  1. nosirrahx

    nosirrahx Master Guru

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    No, perception of need is, especially if the cost of giving people what they think they need is less than giving them what they actually need.

    This isn't a matter of opinion here.

    Your computer almost never moves around massive files. Your computer is constantly doing IO with small files.

    Developing storage with very fast 4KQ1T1 is massively expensive and still a super immature technology (Optane). I use Optane in all of my desktop systems for OS and its f-ing amazing. Its also amazingly expensive and the drives are kind of small so .......... here, have some massive sequential speed instead, your welcome.
     
  2. NewTRUMP Order

    NewTRUMP Order Master Guru

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    That's a great college course quote in economics, but I am talking specifically about ssd speeds.
     
  3. pegasus1

    pegasus1 Maha Guru

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    And for free.
    Something new being faster is a selling point, and also not everybody goes from the last gen to the next gen, some jump several generations, i went from a 2700k (5ghz) to a 3800x and noticed a huge improvement. If id have upgraded several times instead i doubt the perceived improvement would have been as great.

    Faster also sells, and that's the whole point.
     
  4. nosirrahx

    nosirrahx Master Guru

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    FYI, not a college grad, self taught IT career.

    I mentioned it above but I will mention it again. Your PC spends almost all of its IO time working with small random files so speed in the 4KQ1T1 metric is what you feel.

    From a marketing perspective though this is tough as 300meg per second is insanely fast for 4KQ1T1, yet the number is smaller than the advertised 3000 to 6000 megs per second sequential speed.

    The average Joe/Jane sees a huge number and buys the drive never knowing that this number applies to .1% of their use case.

    In the car world, this is like HP, top speed and lap times. Massive HP and insane top speed gets attention even though a small lap time actually better reflects how the car drives and handles.

    Need does not dictate as much as you think.
     

  5. nizzen

    nizzen Master Guru

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    My 3x Optane 900p In raid-0
    Everything else feels so slow :p
    [​IMG]
    Happy christmas :D
     
  6. nosirrahx

    nosirrahx Master Guru

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    I do something similar with 4 905Ps in my workstation. You have me beat on 4K.

    [​IMG]
     
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  7. wavetrex

    wavetrex Master Guru

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    That's not the same CDM version... the results cannot be compared, the author completely changed the algorithm.
    Here's another with 6.0.2:

    [​IMG]
     
  8. nizzen

    nizzen Master Guru

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    You are aparently benching RAM. Using cache program?

    No problem comoaring 2 different versions. Close to no difference on the same computer :)
     
  9. wavetrex

    wavetrex Master Guru

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    Guilty :)
    Which is also why I'm in no hurry to upgrade the "old" SATA SSD, because other than very large linear transfers (which very rarely happen), just 4 GB of RAM caching pretty much makes everything instantaneous.

    http://www.romexsoftware.com/en-us/primo-cache/index.html
     
  10. nizzen

    nizzen Master Guru

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    "Everything"

    You mean data in cache...

    It's a reason we use Optane and not software cache program. Reading data for the first time in one session is slow with cache, but fast with Optane ;)

    Cacheprograms make benchmarks fast, and that's pretty much it. Maybe faster loading of often used programs and windows startup.
     

  11. wavetrex

    wavetrex Master Guru

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    ... but happens in background after booting, with the feature called "prefetch"
    It can be slow, but it contains the most useful things which I've used during last session.

    CPU caches, GPU caches, OS caches (RAM), Flash caches in SSHD, RAM cache in higher-end SSDs... they all exist and work just fine for a reason:
    A large chunk of the data that is being exchanged is reused over and over again in normal usage patterns.

    Caches work and engineers have figured this out a long, long time ago.

    Obviously the effects of RAM caching of SSD/HDD can't be directly measured, as shown by those ridiculously high numbers, which don't reflect reality.... but the effect is noticeable enough to worth using it.
    I'm not a professional video editor, I don't need gigantic amounts of data being moved all the time from the storage... for me even the little RAM cache has enormous effects in speed in all general use.

    Anyway, wrong topic to discuss all this...
     
  12. nosirrahx

    nosirrahx Master Guru

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    Does not work on boot and if you do very heavy work you need that RAM. Handing a pile off to persistent cache ends up paging more, turns into an IO mess.

    I experimented with RAM cache and it resulted in very inconsistent performance, boot times were obviously just at the speed of the drive.

    Optane gives you consistently fast everything, can't even tell what is and is not cached into RAM currently.
     

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