USB 3.0 Slow Speeds

Discussion in 'MacBook Pro' started by loon3y, Jun 18, 2015.

  1. loon3y macrumors 65816

    loon3y

    Joined:
    Oct 21, 2011
    #1
  2. soupcan macrumors 6502a

    soupcan

    Joined:
    Nov 21, 2014
    Location:
    Netherlands
    #2
    It depends on the kind of files you're trying to copy. Single large files are no problem but as soon as you have a LOT (and I do mean a LOT) of tiny files it slows to a crawl. You can't do anything about that, that's just how non-volatile memory works.

    Or it could be a bad USB chip.
     
  3. totten76 macrumors regular

    totten76

    Joined:
    Mar 12, 2015
    #3
    10 gigs is a lot of data for a USB flash drive. Some sticks that are cheaper are just slower. I like to transfer files in 3-5 smaller increments instead of one big one. I feel like it goes quicker but who knows?
     
  4. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #4
    Flash drives almost always tend to have bad performance, because:
    1. They don't support UASP. BOT is just crap for random I/O.
    2. Cheap NAND.

    You'd only see pretty good speeds with something like a Kingston HyperX (and even so, only in sequential performance).
     
  5. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #5
    Looks normal to me for that amount of files and that size transfer. USB thumb drives, even USB 3.0 ones are dead slow for operations like this.
     

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