USB Drive Read/Write Speeds

Discussion in 'hardware' started by Reality, May 1, 2016.

  1. Reality

    Reality Registered Member

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    Theres a huge difference in flash drives and their read/write speeds and usually with prices to match. I got a USB2 8GB drive 1/2 price with the view to just trying out installing an OS on it.

    I ran a test: Write Speed 5.79MB/Sec ---- Read Speed 17.90MBSec

    Would this be considered fast enough to run an OS on. If not what what speed would you guys recommend?

    TIA
     
  2. Bill_Bright

    Bill_Bright Registered Member

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    Speed really does not matter in terms of running. You may not be happy with the performance, but the slow speed should not prevent it from running. Where I think you will have problems is the size. 8GB is not very big and may not be big enough. I note here for W7, they recommend 32GB. For this W10 guide, it recommends "at least 16 GB (preferably higher) capacity".

    If me, I would go get at least a 64GB USB3.0 drive.
     
  3. Brian K

    Brian K Imaging Specialist

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    Reality,

    A few years ago I created a Windows To Go USB flash Drive. The flash drive speeds were similar to what you mentioned. The USB2 flash drive was 16 GB. It was a disaster. Slower than watching grass grow. I then created Windows To Go on a USB2 hard drive (64 GB partition) and its speed was quite acceptable.
     
  4. Reality

    Reality Registered Member

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    Thanks for your input. The title should have been USB flash drive, but I can't change the title now.

    As you know Bill I'm on XP and have no interest in W10. The other computer does have W7 which I will "tolerate"( :) ) experimenting with it offline, as it was given to me. My 2 Current Computers are USB2. Just to clarify I was thinking more in terms of light Linux distros or Tails or something. There's also 16GB drives on special right now and I could spring for a couple of those.

    So if you were to run an OS (size aside) what is the minimum speed you'd be comfortable with?
     
  5. Brian K

    Brian K Imaging Specialist

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    Your 8 GB UFD would be fine with Linux. Even 2 GB would be OK.
     
  6. Reality

    Reality Registered Member

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    Thanks BrianK. Our posts crossed. What is Windows to go?
     
  7. Brian K

    Brian K Imaging Specialist

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  8. KeyPer4Life

    KeyPer4Life Registered Member

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    @Reality

    Here are speed test results of USB flash drives of the 8GB group using USBDeview utility.

    NOTE: Tests are made by making a sequential read and write operations of a single file.
    When you use multiple small files, you'll probably get much lower read/write performances.
    http://usbspeed.nirsoft.net/?g=8gb


    The Differences Between Persistent Live USB and Full Linux Install on USB
    https://www.maketecheasier.com/persistent-live-usb-vs-full-install-usb/

    @Bill_Bright
    I don't see why one would need a 32GB USB flash drive for Windows 7 as mentioned in post #2.
    Wouldn't 16GB be plenty enough?
     
  9. Reality

    Reality Registered Member

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    Your link quickly had me thinking the same.

    Hi KeyPer, yes the nirsoft utility was what I used to run the test. This UFD is made in China so who knows what that means. It's comparable to my other UFDs and their readings. I suppose how full the drive is would make a difference too, for example, my Sandisk 32GB drive was VERY slow, but it's almost full whereas the 8GB was empty.

    Thanks for that link about those differences, which I wasn't aware of. Always much to learn.
     
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