1394 Cable Transferring Speed ?

Discussion in 'Computer Support' started by Robert11, Nov 18, 2007.

  1. Robert11

    Robert11 Guest


    Would an external HD storage device connected to the PC via a 1394 cable run
    as fast, and transfer as fast,
    as a "typical" internal HD ?

    How about via a USB cable ?

    Robert11, Nov 18, 2007
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  2. Robert11

    Kraftee Guest

    Think you will find that a USB2 connection will be a tad faster than
    your firewire one & supposedly on par with the speed available via an
    IDE cable. The one big variable which you've missed is how fast the
    HD is......
    Kraftee, Nov 18, 2007
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  3. Robert11

    Pennywise Guest

    Had a friend who transferred photos from his camera to the hard drive
    with a Card Reader, USB2 (connect to camera) and Firewire. as a test,
    there were a couple of gigs on the memory card.

    Firewire was 10x faster, card reader the slowest. Firewire was so much
    faster that It's the route I'll take given a chance.

    Something like 20 mins to transfer using USB and 2 mins with firewire
    - no contest.

    As you mentioned, you can only go as fast as the Hard Drive can
    receive data
    Pennywise, Nov 18, 2007
  4. Robert11

    richard Guest

    Using an external USB hard drive, I've never really seen anything
    outstandlingly slow in response. Just like as if it were in the machine
    I've downloaded from a camera before using usb and did not see that it was
    that slow as you say.
    But I would never wait until the card was that full either.
    richard, Nov 18, 2007
  5. Robert11

    Mitch Guest

    USB is not faster than FireWire 400; it doesn't even come close to
    FireWire 800 or eSATA.

    USB is the slowest external storage available, not the fastest.
    Mitch, Nov 18, 2007
  6. Robert11

    M.L. Guest

    Think you will find that a USB2 connection will be a tad faster than
    In addition, USB uses your cpu bandwidth, firewire does not. All my
    external hard drives are firewire for that reason.
    M.L., Nov 18, 2007
  7. Robert11

    Mitch Guest

    It sounds like you think the cable is what makes the difference; there
    are a lot of protocols and support chips involved in these things, too.
    The cable itself is almost incidental.

    For instance, USB is managed by the main processor, and all data runs
    through the main bus. So no matter what the nominal speed of USB is, it
    is mitigated by any other activity of the computer. It will be very
    slow when other transfer are going on or the processor is very busy.

    FireWire manages itself, and can transfer directly from one device to
    another. It also scales itself based on demand and activity.

    If you are talking about archiving, backups, or copying from source
    devices, you probably don't care about those differences -- they are
    things you do at the beginning or end of a project, and you may not
    have the computer doing much else then.
    But if you are talking about using the external drive as a startup
    drive, or to run apps from, or to use as scratch storage or VM, then
    those factors matter a lot.
    Mitch, Nov 18, 2007
  8. Robert11

    Kraftee Guest

    Maybe with USB1.1 but look up the specs for USB2, you may get a
    suprise as theoretically it is supposed to be faster (by a largish
    margin) than even Firewire
    That's going to be the cavat
    Kraftee, Nov 18, 2007
  9. Robert11

    Kraftee Guest

    Why o why don't you actually read what is written...

    I never said USB was faster than Firewire I said that _USB2_ is faster
    there is a world of difference between the performances of those.

    Instead of this knee jerk reaction (mind you it is the norm I suppose)
    how about checking the specs..

    USB1.1 12Mbps
    USB2 480Mbps
    Firewire 400Mbps

    Which one is the fastest now then.....
    Kraftee, Nov 18, 2007
  10. Robert11

    nobody > Guest

    The clincher is that USB2 is 480 mbs in bursts, as well as being CPU
    intensive. It will crawl when doing "big things" on the host computer.

    FireWire is 400mbs but that is *sustained*, not burst.

    Use USB2 for small things or if it's the only interface you have.
    Run FireWire if you can for big transfers.
    nobody >, Nov 18, 2007
  11. Robert11

    FML Guest

    Although USB2 is theoretically faster than Firewire, in real life,
    Firewire almost always outperforms USB2. Architecture differences have a
    huge impact on the sustained throughput. Firewire is peer-to-peer where
    "intelligent" peripherals control bus conflicts. USB is master-slave
    where the CPU handles all arbitration functions adding additional system
    overhead and resulting in slower data flow.

    Typically Firewire is 33% to 70% faster than USB2 in disk read
    benchmarks and 16% to 48% faster in write benchmarks depending on number
    of files and file size.

    FML, Nov 18, 2007
  12. Robert11

    DanR Guest

    eSata. 3Gbps.
    DanR, Nov 19, 2007
  13. Robert11

    Mitch Guest

    It is you who didn't read.
    I did NOT specify USB 1.1
    I was including ALL USB specs -- yes, Firewire 400 is a LOT faster than
    USB 2. What you are reading is nominal speed, and USB can basically
    never reach that.

    FireWire 400 nearly can. FireWire 800 can almost double it.

    I don't know when or if USB 3 will be final, but it doesn't appear to
    be on track to compete with fast hardware protocols.
    Mitch, Nov 19, 2007
  14. Robert11

    Mitch Guest

    I doubt anyone reading this thread is thinking about USB 1.1
    There are lots of comparisons, using varieties of data in various
    situations, even under several platforms.
    FireWire 400 is faster.

    More than that, those comparisons are almost always FW 400, and FW 800
    has been out for years. It's significantly faster.
    FW1600 (reportedly) may be out soon, and eSATA is either close to being
    ratified or was recently.
    Mitch, Nov 19, 2007
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