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  1. #1
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    G750JM - low Random Write IOPS on SSD

    Hello all,


    System Manufacturer: ASUSTeK COMPUTER INC.
    System Model: G750JM
    OS Name: Microsoft Windows 10 Education
    OS Version: 10.0.10240 N/A Build 10240

    I've noticed that my G750JM ( running WIndows 10 ) with Samsung 840 Pro 256 GB has quite a low Random Write IOPS ( around 15 k ) and Sequential Write. I remember I had quite a better speed on Windows 8.1 . My OS install was fresh , I did not upgrade .

    I'm using the latest Samsung Magician -> all recommended settings for maximum performance & have disabled system restore . There are no errors reported on my SSD , so I think it might be related to the Storage controller ( which is the Microsoft Storage Spaces controller - default one )

    I've installed Intel chipset , nothing changes.

    Do you have any ideeas / suggestions ?

    Thank you
    Miniatura de Adjuntos Miniatura de Adjuntos SSD.JPG  

    Last edited by iloveme; 11-02-2015 at 07:06 PM.

  2. #2
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    Did you perhaps have dram caching turned on before?
    G750JW-T4041H | i7-4700HQ | 1 x 1TB Crucial M550 SSD | 2 x Samsung 2TB HDD | 32GB Crucial Ram.

  3. #3
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    hi and 10x for the reply. No , I did not have anything like that. I'm sure if I enable rapid mode I will see a huge increase, however first I want to see what might be the issue .

    -> I've uninstalled my antivirus
    -> I have reserved 10% of free space as Samsung recommends ( and beside that , I have around 100 GB of free space )
    -> I'm on SATA 3

    All that I can think of are in best practices , yet I have under 300 MB write and 15k IOPS . I really do not expect to hit those 500 MB and 90 K IOPS as I know I do not need them , however there is a HUGE difference , so something somewhere is wrong ...

  4. #4
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    Fixed it. Just in case someone else gets here , I had 2 backup programs installed , with all kinds of features. I assume one of them had a driver or something for remembering changed blocks , which had the outcome that you see in the initial printscreen .

    After uninstalling them, speed is as expected

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