1.    26 Sep 2016 #1
    Join Date : Jun 2015
    Posts : 14
    Windows 10 Preview

    Slow downs in SATA transfer speed


    I am having an odd issue where the transfer speed from my HDDs slows to unusable after my computer has been on for a while.

    I have my primary OS drive as a Samsung 850 1TB SSD, paired with 2 x 3TB Toshiba HDDs. When I first start my computer, everything works as it should. After a few hours however, the transfer speed from the 3TB drives slows to around 200kb/s (according to resource monitor). At this speed the drives are almost unuseable. I am not quite sure where to begin diagnosing this problem. I am using an Asus Maximums VIII Hero Alpha motherboard with Core i5 6600K Skylake processor, and 16GB. As far as I can tell the problem is limited to the HDDs, not the SSD. Looking at resource monitor, there is nothing lse using the drive that would explain the transfer speed, and there are no processes overusing the CPU. There are no programs installed on the HDDs, they are used for storage only. One stores my docs, music and video files, the other contains backups of the other drive created by EaseUS. I use Intel Rapid Storage Technology drivers.

    If any other information would be useful, please ask. Any assistance would be appreciated.
      My ComputerSystem Spec
  2.    27 Sep 2016 #2
    Join Date : Jun 2015
    Posts : 141
    windows 10

    Change the SATA slot may helps.
      My ComputerSystem Spec
  3.    28 Sep 2016 #3
    Join Date : Jun 2015
    Posts : 14
    Windows 10 Preview
    Thread Starter

    Did try that, same issue. Will try using the ASMedia controller though to see if it's and Intel issue. Have also updated my motherboard BIOS to the latest. At my wits end with this, brand new computer, brand new drives, and they are unuseable. Temps on the HDDs are around 35C, so not overheating. AHCI is enabled in BIOS. Drives are reporting as healthy in any and all analysis applications I've used.

    Any other suggestions? Never come across this before so don't know what to do.
      My ComputerSystem Spec
  4.    02 Oct 2016 #4
    Join Date : Jun 2015
    Posts : 14
    Windows 10 Preview
    Thread Starter

    Tried putting the drives on the ASMedia controller but the same issue seems to occur after a day or so, albeit not as severely as on the Intel controller. Still only getting around 4MB/s transfer speeds. Could it have anything to do with the computer going to sleep and the drives not waking properly?
      My ComputerSystem Spec

 


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