Windows 8 and 8.1 Forums


Trying to gauge SSD performance

  1. #1


    Posts : 103
    Windows 8.1 Pro with Media Center

    Trying to gauge SSD performance


    Hi all,
    I just installed Windows 8.1 on a brand new Samsung 850 Pro (after some trouble) and I'm trying to assess the performance to make sure everything came out all right before I go to all the trouble of reinstalling my applications. Here are my results from AS-SSD benchmark -- they seem lower than the advertised numbers, but maybe that's nothing. Let me know if these are fine and how I can improve (just wanting to make sure things are set up correctly, not wanting to squeeze every number out of this thing).

    (I've already double-checked to make sure the drive is aligned, though the default 8.1 installation should have accounted for this if I understand correctly)
    Regards,

    Click image for larger version
    Last edited by authorandrew; 20 Feb 2015 at 13:26.

      My System SpecsSystem Spec

  2. #2


    Posts : 103
    Windows 8.1 Pro with Media Center


    Samsung Magician is asking me to enable AHCI mode in order to boost performance, but I'm not sure how to do this.
      My System SpecsSystem Spec

  3. #3



    Trying to Sith things out
    Bamberg Germany
    Posts : 2,290
    Windows 10 Pro 64 bit


    Quote Originally Posted by authorandrew View Post
    Samsung Magician is asking me to enable AHCI mode in order to boost performance, but I'm not sure how to do this.
    You have to go into your PCs BIOS to change IDE to AHCI for your disk. To understand what the differences between the two go here.
      My System SpecsSystem Spec

  4. #4


    Posts : 103
    Windows 8.1 Pro with Media Center


    Ok, my BIOS doesn't have an option to change this. Following the link you sent me, I found this tutorial: https://www.youtube.com/watch?v=i8gW_ycdnas#t=17 -- the option it mentions, in the Main tab, is not in my BIOS. Perhaps this could be solved by a BIOS update?
      My System SpecsSystem Spec

  5. #5


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Here are the details. Make the setting in the OS first. If there is no AHCI setting in the BIOS, use RAID.

    AHCI : Enable in Windows 7 / Vista - Windows 7 Help Forums

    Other than that your numbers are really good.
      My System SpecsSystem Spec

  6. #6


    Posts : 103
    Windows 8.1 Pro with Media Center


    Sorry, I should have been clearer. It's not that I don't have an AHCI option, it's that I don't have the option to change anything about my disk at all. My BIOS looks pretty basic.

    EDIT: I also don't have an msahci key in my registry, perhaps due to the age of my computer? It's from c. 2012
      My System SpecsSystem Spec

  7. #7


    Yes, the AS SSD figures look good, that's normal for SATA II capable laptop, you will achieve the advertised speeds only in a SATA III capable laptop.
      My System SpecsSystem Spec

  8. #8


    Posts : 103
    Windows 8.1 Pro with Media Center


    Ahh, I suspected the SATA connector was the bottleneck. Is that after-market upgradeable, or just something to wait until I upgrade?
      My System SpecsSystem Spec

  9. #9


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    There is really nothing to worry about. In the measurements you may get better nums with a Sata III connector, but in real life you would not notice the difference. The amazing speed of the SSDs comes from the extremely short access time (0.1ms or less versus 15ms of a HDD). The data transfer rates are of minor importance - especially since the OS deals only with 4K records most of the time. If you make a measurement with Atto, you will understand what I mean.
      My System SpecsSystem Spec

  10. #10


    Posts : 103
    Windows 8.1 Pro with Media Center


    That's good to hear. Thanks! Now to set up my apps/programs again...
      My System SpecsSystem Spec

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