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RE: [PanoToolsNG] memory sticks cf slower than HD? was Re: video card

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  • Joergen Geerds
    there are plenty of comparison charts out there, http://barefeats.com has some. even gizmodo has a comparison:
    Message 1 of 6 , Jul 25, 2007
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      there are plenty of comparison charts out there,
      http://barefeats.com has some.
      even gizmodo has a comparison:
      http://gizmodo.com/gadgets/feature/among-many-fast-sdhc-cards--only-one-is-king-of-speed-278351.php

      you are quoting the theoretical bus speeds below,
      which are meaningless in the real world, nobody has
      seen 60 MB/sec coming from an USB device. As a rule of
      thumb, current (single) SATA disks deliver between
      60-90MB/s, a CF card between 5-20MB/s

      -joergen

      >
      > I've never seen a comparison chart between HDD's and
      > CF cards - I'm curious
      > how they compare. USB-2 is very fast - 480
      > megabits/second. But HDD's are
      > so much faster - SATA-2 is 3 Gigabytes per second,
      > SATA-1 half that. Even
      > the fastest memory stick / card is limited by the
      > connection to the computer
      > (USB, USB-2, etc.) If your card's transfer speed
      > was limitless - an
      > zettabyte in a nanosecond - your USB-2 would still
      > cut that down to 480
      > megaBITS per second (480/8=60 megabytes per second.)
      >
      >
      >
      > Rick
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