USB 3.0 actual speed

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  1. Posts : 32
    Windows 10
       #1

    USB 3.0 actual speed


    I have recently been experimenting with the capabilities of a USB 3.1 thumb drive (Lexar JumpDrive 32GB). Given claims from manufacturers are not always the most realistic, I would like to ask what other people see as far as an average write speed. I am using a computer equipped with a single USB 3.0 port and have been seeing speeds as high as 20 MB/S. I recently updated all the drivers so there are no unidentified entries in the Win10 Device Manager. Are these comparable to what other people experience? Maybe a link to a good benchmark for typical usb 3.0 usage?

    USB 3.0 actual speed-usb-write.png
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  2. Posts : 524
    Windows 10
       #2

    Use CrystalDiskMark to benchmark the UFD. Bear in mind that read and write speeds are vastly different. In read operations, you should get what the UFD specs say, about 250 MB/s.
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  3. Posts : 22,767
    Win 10 Home ♦♦♦19045.4123 (x64) [22H2]
       #3

    teknique said:
    I have recently been experimenting with the capabilities of a USB 3.1 thumb drive (Lexar JumpDrive 32GB). Given claims from manufacturers are not always the most realistic, I would like to ask what other people see as far as an average write speed. I am using a computer equipped with a single USB 3.0 port and have been seeing speeds as high as 20 MB/S. I recently updated all the drivers so there are no unidentified entries in the Win10 Device Manager. Are these comparable to what other people experience? Maybe a link to a good benchmark for typical usb 3.0 usage?



    Corsair claims this USB stick can do 440 MB/s.
    Here's my CrystalDiskMark scores for a 2.5" SSD and the USB stick...

    USB 3.0 actual speed-0000-crystaldiskmark.png
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  4. Posts : 1,039
    windows 10
       #4

    I bought the kingston hyperx savage 64gb 4 years ago, good performance. The corsair gtx mentioned above is better it has as a controller and I believe the trim command is supported.

    Kingston DataTraveler Elite G2 and HyperX Savage USB Flash Drives Capsule Review
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  5. Posts : 32
    Windows 10
    Thread Starter
       #5

    Can anyone say why these numbers might be so abysmal?
    They match the 20 MB/S File Explorer was showing.

    USB 3.0 actual speed-lexarjumpdrive32gb.png
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  6. Posts : 22,767
    Win 10 Home ♦♦♦19045.4123 (x64) [22H2]
       #6

    teknique said:
    Can anyone say why these numbers might be so abysmal?
    They match the 20 MB/S File Explorer was showing.


    Keep in mind that MB/s x 8 = Mb/s

    USB ports are rated in Mb/s or Gb/s.
    Crystal Disk Mark shows MB/s

    Your 38.96 MB/s = 311.68 Mb/s


    One of the reason we ask forum members to fill out their computer specs, is so we can double check things like USB port versions, etc.

    For example, my current motherboard has all USB 3.2 ports, but the motherboard I had previous to this...

    USB 3.0 actual speed-image1.png
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  7. Posts : 524
    Windows 10
       #7

    Maybe the port is really a USB 2.0 port, not a USB 3.0 port.
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  8. Posts : 32
    Windows 10
    Thread Starter
       #8

    So these look more like USB 2.0 speeds?
    Here is the visual for this Dell 7370.

    USB 3.0 actual speed-dell-7370.png

    - - - Updated - - -

    device manager

    USB 3.0 actual speed-device-manager.png
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  9. Posts : 1,039
    windows 10
       #9
      My Computer


  10. Posts : 2,693
    Windows 10
       #10

    "Can anyone say why these numbers might be so abysmal?"

    They are not, your numbers are typical of standard low priced USB 3 thumb drives, no worries.

    You pay a lot more for higher speed drives.

    It really is that simple.

    "So these look more like USB 2.0 speeds?"
    No, the limitation is the memory chips in the drive. The speed is a bit faster than USB 2 theoretical max speed.

    The manufacturer only quotes Read speeds because Write speeds are always a lot slower.

    CrystalDiskMark is designed for HDDs and SSD benchmarking, not USB thumb drives.

    You can get a better idea of read/write speeds from the h2testw application.
      My Computer


 

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