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Subject: Re: usb2 on the archos
From: mrlipring (mrlipring_at_tiscali.co.uk)
Date: 2003-09-10


Messagetheoretical maximums though.

If you were to benchmark the same hard drive, through external usb2 and firewire caddies, you'd more than likely find that the firewire would be slightly quicker. i recall reading benchmarks on toms or anandtech or something. One of those sites anyway.

This is kinda irrelevant though, because it was only a difference of a meg or 2 a second, and considering that you tend to write a few hundred mb, or a few gigs at the most, and after that it's being read off the hard drive when the archos is in use, and it's not gonna be working at anything near its capability then.
  ----- Original Message -----
  From: Gvillo, Mike
  To: rockbox_at_cool.haxx.se
  Sent: Wednesday, September 10, 2003 6:22 PM
  Subject: RE: usb2 on the archos

  Good post. I said Firewire was faster then USB 2.0 without knowing what I was talking about.
    -----Original Message-----
    From: John Stevenson [mailto:steveo1967_at_yahoo.com]
    Sent: Wednesday, September 10, 2003 1:06 AM
    To: rockbox_at_cool.haxx.se
    Subject: RE: usb2 on the archos

    "Gvillo, Mike" <MXG_at_dolby.com> wrote:

      I wouldn't worry about it too much. To take the example to the extreme
      the iPod has firewire which is much faster then USB 2.0 but you only
      really ever do huge upload/downloads once or twice, making that feature
      fairly minor. When you do have to do a large transfer, just set it up
      to go overnight. A usable interface is much more important.

      I disagree with the point that firewire is quicker than USB2.0.

      I am afraid it is not quicker, see table below for differences in speed between different protocols

            Protocol MB/s
             IrDA-Control 0.009
             Serial 0.02
             Parallel 1.0
             Bluetooth 1.1 0.125
             Bluetooth 2 2 to 12
             USB 1.1 1.5
             USB 2.0 60
             SCSI 1 5
             Fast SCSI 2 10
             Fast Wide SCSI 2 20
             Ultra SCSI 20
             Ultra Wide SCSI 40
             Ultra2 SCSI 80
             Ultra 160 SCSI 160
             FireWire (IEEE 1394) 50
             FireWire (IEEE 1394b) 100

      Note 1394b is not that common yet!

      regards

      John

       

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