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    MyDigitalSSD BP4e 480 GB Ultra-slow write speeds

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Piecrust234, May 30, 2015.

  1. Piecrust234

    Piecrust234 Notebook Enthusiast

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    Hello.

    I recently added an SSD to my secondary mSATA slot on my NP8268-S and the speeds seem to be very slow.

    This is my test for the new drive:

    [​IMG]
    As you can see the HDD test was better in some ways than the new SSD:

    [​IMG]

    This is the crucial m5 boot drive:

    [​IMG]

    If you scroll down far enough to this link you will see the same drive as my BP4, but much faster than mine:
    http://mydigitalssd.com/msata-ssd.php


    If anyone can give me a suggestion on why this is happening and how to fix it that would be appreciated.
     
    Piecrust234, May 30, 2015
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  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    I agree that the write speeds are somewhat low. You should be getting better than the Crucial m5.

    Check the policies under the SSD properties in Device Manager and make sure that Write Caching is enabled.

    Edit: Further thought, if you are using the Intel Rapid Storage Technology SATA driver then get the latest from Intel and install it. The installation process may do the required reconfiguration.

    John
     
    Last edited: May 31, 2015
    John Ratsey, May 31, 2015
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  3. Piecrust234

    Piecrust234 Notebook Enthusiast

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    I appreciate the suggestions. I will try those when I get the chance. I will reply after I give it a shot.
     
    Piecrust234, May 31, 2015
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  4. Piecrust234

    Piecrust234 Notebook Enthusiast

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    [​IMG]

    You fixed it!

    I enabled write caching and all is good now. Thank you!

    Did not end up going the the Intel Rapid Storage thing.

    Thanks again.
     
    Piecrust234, May 31, 2015
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  5. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Thanks for the update.

    John
     
    John Ratsey, Jun 1, 2015
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  6. Spartan@HIDevolution

    Spartan@HIDevolution Company Representative

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    Correct me if I'm wrong John but that is not a solution, isn't write caching basically copying the data to the RAM then slowly moving it back to the SSD? in that case, the real slow write speed is not fixed all he's seeing is how fast it copied to the RAM but the root of the issue must be fixed first and the first suggestion I can think of is the IRST driver as well.
     
    Last edited: Jun 2, 2015
    Spartan@HIDevolution, Jun 2, 2015
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  7. namaiki

    namaiki "basically rocks" Super Moderator

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    Most SSDs and hard drives have their own inbuilt write cache in the form of RAM. In conventional drives maybe 8MB, but in SSDs it can be up to 1GB. (From what I can find, the Crucial M500 120GB has 256MB DDR3 cache.) In Windows it is enabled by default.
     
    Last edited: Jun 2, 2015
    namaiki, Jun 2, 2015
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  8. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Enabling the write cache appeared to fix the problem. I'm not sure how it all works but it's a similar situation to the policies for removable storage: Safe Removal puts data through in blocks and doesn't send the next block before having confirmation that the previous one has been written whereas Maximum Performance pushes data through as fast as it can be accepted (and any data in a cache will be lost if there is a sudden power failure or shutdown).

    John
     
    John Ratsey, Jun 2, 2015
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