The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    USB 2.0 eHDD speed

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by fred2028, Jun 27, 2011.

  1. fred2028

    fred2028 Sexy member

    Reputations:
    196
    Messages:
    2,205
    Likes Received:
    1
    Trophy Points:
    56
    I have a USB 2 external hard drive that is externally powered, 3.5", and spinning at 7200 RPM. How are these speeds for it?

    Is USB 2 the limiting factor for the data transfer speed?
     
    fred2028, Jun 27, 2011
    #1
  2. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

    Reputations:
    5,398
    Messages:
    12,692
    Likes Received:
    2,717
    Trophy Points:
    631
    Yeah, good ole USB 2.0 is limiting what it can do.

    Bluetooth is almost as fast. ;)
     
    tilleroftheearth, Jun 27, 2011
    #2
  3. fred2028

    fred2028 Sexy member

    Reputations:
    196
    Messages:
    2,205
    Likes Received:
    1
    Trophy Points:
    56
    From a similar eHDD but USB 3.0 connected to my USB 3 laptop (with SSD), what would be the maximum sustainable speed for transfers?
     
    fred2028, Jun 27, 2011
    #3
  4. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

    Reputations:
    5,398
    Messages:
    12,692
    Likes Received:
    2,717
    Trophy Points:
    631
    That would be basically at the external HDD's limits: around 100 MB/s at the outer edges and about 40GB/s on the slower, inside tracks. (Depending of course on what HDD it actually was...).
     
    tilleroftheearth, Jun 27, 2011
    #4
  5. fred2028

    fred2028 Sexy member

    Reputations:
    196
    Messages:
    2,205
    Likes Received:
    1
    Trophy Points:
    56
    40 gb or mb
     
    fred2028, Jun 27, 2011
    #5
  6. namaiki

    namaiki "basically rocks" Super Moderator

    Reputations:
    3,905
    Messages:
    6,116
    Likes Received:
    89
    Trophy Points:
    216
    It would be 40MB/s.

    Still, find out the model of the hard drive in the enclosure and then you can find a HD Tune graph - example.
     
    namaiki, Jun 27, 2011
    #6