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Underperforming SSD

Discussion in 'Storage' started by anoobarak, Dec 7, 2011.

  1. anoobarak New Member

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    Hey,

    I have a Kingston SSDNow V200 64GB SSD drive, and I'm experiencing a lack of it's performance.
    Kingston advertises speeds of 260MB/s read and up to 100MB/s write, which is good enough for me because it's being used as a boot drive for OS and programs.
    The problem with it is, that write speeds suck. I've tried benchmarks, I tried writing a big file to the drive, and write speed was a sustained 53MB/s , in addition to that, the windows experience index shows a 5.9 subscore for it, while ssd's should be closer to 7 (out of 7.9).
    I have AHCI enabled and all. Tried tweaking it by disabling file indexing and superfeches/prefeches etc. (though AHCI was enabled through the windows registry, and then through the BIOS) Nothing seems to make a difference.
    Is there something I can do about this?
    A few screenies of benches in attachments.

    Attached Files:

  2. happita

    happita

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    As far as I know, AHCI should be enabled before the OS is installed on the drive through the BIOS. But then again, I don't know a whole lot about that line of Kingston drives.
  3. dark2099

    dark2099

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    where everyone wants to be
    Go to the control panel, device manager, find you SSD, right click on it, select properties, go to the policies tab, and make sure that both boxes are ticked, if not do so and restart. Should look like below.

    [​IMG]
  4. anoobarak New Member

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    AS SSD bench detects that msahci is working as it should.
    After turning off windows write-cache buffer flushing on the device, write speeds degraded even more, though reads were even more consistent and faster through out the range. what does this mean..
    Do you guys thing a fresh install of windows, with ahci enabled from the start would make a difference? Because reinstalling windows with all the drivers, other apps and updates is a real pain.
  5. erocker

    erocker Super Moderator Staff Member

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    Yes, I got similar results when I just ghosted my Windows install onto an SSD. It could just be your onboard Sata controller being difficult as well. Do you have your chipset/Southbridge drivers up to date?
    anoobarak and 95Viper say thanks.
  6. pantherx12

    pantherx12 New Member

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    The second option sounds dangerous :laugh:
  7. 95Viper

    95Viper

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    link: AMD RAID/SATA Drivers

    :)
  8. anoobarak New Member

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    My drivers are all up to date, though I didn't have this installed, and when I did, performance degraded even more so. I think I'm reinstalling windows tomorrow. Can't think of any reason why the ssd is performing so poorly. Could it be my motherboard from 2007 or whatever.
    Thanks for the help guys, I'll be posting when I'm finished reinstalling windows.
  9. 95Viper

    95Viper

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    Did you clone or create the SSD from a backup, instead of a fresh install?
    It might not be aligned.

    A fresh install, like you are doing, should create the aligned partitions.

    Some reading.:)
    SSD Alignment Calculator
    Partition Alignment Spreadsheet
    SSD Speed Tweaks
    Make Sure Your Partitions Are Correctly Aligned For Optimal SSD Performance
    Disk Alignment on Windows 7 for normal disks and SSDs
    anoobarak says thanks.
  10. anoobarak New Member

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    Windows reinstall fixed it.. speeds are up to spec..but.. not always:

    [​IMG]

    Anyway, now I'm happy how it is, and thanks to all for help. :respect:
  11. anoobarak New Member

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    Screw this ssd. I returned it. Will pay 20$ more and get an OCZ Agility 3 60GB one.
    Now I'll have to look for a new motherboard to make full use of the speed that drive offers :p

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