Slow USB transfer speeds

Discussion in 'Troubleshooting Help' started by shiatzu_kiora, Oct 12, 2017.

  1. shiatzu_kiora

    shiatzu_kiora Member

    Joined:
    Mar 9, 2005
    Messages:
    124
    Location:
    QLD-Brisbane/Ipswich
    Hey everyone,

    Googling this doesn't really help (too many results that go back years), but I'm experiencing slow transfer speeds with my USB 3.0 drive in a USB 3.0 port.

    It starts at almost 100mb/s, then drops to 20-30mb/sec.

    It's being read from a SSD so there shouldn't be any read issues. It does this with EVERY file, not just some.

    Any blanket ideas?

    FYI - the USB socket isn't on the back of the motherboard, it is from the front of the case, but it is from the USB3.0 headers on the motherboard and the case USB slot is a 3.0 slot.

    https://i.gyazo.com/cd6e47ea1eb7131141d0fe64387a89da.png
    [​IMG]
     
  2. FOTW

    FOTW Member

    Joined:
    Jul 20, 2002
    Messages:
    756
    Location:
    Kilcock, Ireland
    Whats the specs on the HDD your writing to?

    It could depend on the write speed of the destination drive. Once the HDDs buffer is filled the speed drops.
     
  3. OP
    OP
    shiatzu_kiora

    shiatzu_kiora Member

    Joined:
    Mar 9, 2005
    Messages:
    124
    Location:
    QLD-Brisbane/Ipswich
    It's going onto a thumb drive. It's not a ssd or mechanical drive.
     
  4. power

    power Member

    Joined:
    Apr 20, 2002
    Messages:
    52,063
    Location:
    brisbane
    thumb drives often have slow write speeds - regardless of what the interface is capable of.
     
    koopz likes this.
  5. BloodDonor

    BloodDonor Member

    Joined:
    Sep 3, 2001
    Messages:
    1,584
    Location:
    Invercargill NZ
    Unless its a quality USB3 drive, its likely to have pretty terrible speeds... I have a couple which are rated at over 100MB/sec which is great when you have to copy over GB's of .NEF photos

    What's the actual drive? is it a generic one, or something like a SanDisk Ultra Flair?
     
  6. congoh

    congoh Member

    Joined:
    Jan 18, 2002
    Messages:
    5,723
    Location:
    Melbourne, not too far from Monash Uni.
    Try connecting to rear usb3 port and see if you get similar results.

    What case r u using? Some case manufacturers cut cost by using cheap unshielded lower gauge cables on front usb connectors which can cause problems. Eliminate this as one potential cause.
     
    schmoove likes this.
  7. koopz

    koopz Member

    Joined:
    Dec 27, 2001
    Messages:
    1,841
    Location:
    Qld
    insert funny House gif here..
     
  8. terrastrife

    terrastrife Member

    Joined:
    Jun 2, 2006
    Messages:
    18,207
    Location:
    ADL/SA The Monopoly State
    thumb drive ran out of cache OR Windows ran out of cache, writing directly to NAND= slow.
     

Share This Page