Startek USB 3.0 card not running at 3.0 speeds

Discussion in 'General Hardware' started by Mainer82, Sep 28, 2010.

  1. Mainer82

    Mainer82 Binary

    Messages:
    101
    Hi,

    I have purchase the STARTECH PEXUSB3S2 PCI Express card for my new system (i5) I built last year. I also purchased a Western Digital MyBook 3.0 external hard drive. It is USB 3.0 capable and comes with the 3.0 cable.

    I have install the latest drivers for the STARTECH PEXUSB3S2 and also flashed the external drive with the latest firmware. I am running Windows 7 x64 as well.

    Max transfer rate is 25MB/s. I am mostly transferring photos & documents.

    Any suggestions?
     
  2. Johnny

    Johnny .. Commodore .. Political User

    Messages:
    5,015
    Location:
    Happy Valley
    Is the mobo usb 3 compatible? What Mobo is it? Also, how big are the files you are trying to transfer? There are times that a large file will take a little bit because of the buffering an such ..
     
  3. Xie

    Xie - geek - Subscribed User Folding Team

    Messages:
    5,275
    Location:
    NY, USA
    Your never going to get full USB 3.x speeds with an external, but then again your not going to get them with an internal either. USB 3.0 max speed 4.8 Gbit/s = 600mb per sec ... I doubt you have a drive that can read/write that fast. They don't advertise that part when they pitch all this new hardware, your only going to get as fast as your drive and then lose some when you go external.
     
  4. Mainer82

    Mainer82 Binary

    Messages:
    101
    Hi,

    I realize I won't get the full advertised speed but I should get more than 25MB/s. The motherboard is Intel DP55WG but I am using the listed USB 3.0 card.

    The external hard drive is designed for USB 3.0 as well.
     
  5. American Zombie

    American Zombie Moderator Staff Member Political User

    Messages:
    2,931
    Location:
    Seattle
    That motherboard does not support 3.0 USB so you will need to buy a motherboard that has USB 3 if you want USB 3 speeds.

    Intel DP55WG

     
  6. Mainer82

    Mainer82 Binary

    Messages:
    101
    In my first post I stated that I purchase a USB 3.0 card (STARTECH PEXUSB3S2 PCI Express card).
     
  7. Johnny

    Johnny .. Commodore .. Political User

    Messages:
    5,015
    Location:
    Happy Valley
    [edit] I read this wrong. Sorry for the confusion [/edit]

    I think the best advice would be to call the support for the company you bought the card from. About the only thing I can think of is that it isn't reading it isn't possibly reading it as a usb 3.0 ...
     
    Last edited: Sep 29, 2010
  8. American Zombie

    American Zombie Moderator Staff Member Political User

    Messages:
    2,931
    Location:
    Seattle
    Sorry, I missed that.

    Transferring data between what?
     
  9. Mainer82

    Mainer82 Binary

    Messages:
    101
    Between my SATA II internal HDD to the external USB 3.0 HDD. I did xfer a 3.2GB VDI file and the rates jumped to about 48MB/s.
     
  10. Johnny

    Johnny .. Commodore .. Political User

    Messages:
    5,015
    Location:
    Happy Valley
    That is about right for a usb3 ..
     
  11. dreamliner77

    dreamliner77 The Analog Kid

    Messages:
    4,702
    Location:
    Red Sox Nation
    Just a thought but the low speed may be due to multiple small files. Also, have you defragged the source drive?