Compact Flash Speed

  • Please provide some information about the hard- and software used.


    Box type:DM7025
    GUI (enigma1/enigma2):enigma2
    Firmware version: **No Support for this Image in this Board**


    What is the reading speed of compact flash port


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    Einmal editiert, zuletzt von floh ()

  • When comparing the X-speed ratings of Compact Flash cards from different manufacturers, users need to beware that manufacturers define this rating differently and in some cases do not define it at all. Some definitions refer to the X-speed as "read" speed or "write" speed. Others use it to mean both and call it "data transfer" speed (referring to read and write speed).
    Compact Flash cards with a higher X-speed rating are designed to perform faster.


    50X = 50(multiplier of 150KB/sec) =7,500 KB/sec = 7.5 MB/sec
    1 KB = 1,000 Bytes; 1 MB = 1 million Bytes.


    When a Compact Flash card is rated at 50X, does this mean that data will transfer at 7.5 MB/sec in any host device? Not necessarily.


    Any host device is itself limited by the speed of its interface to the Compact Flash card. Often, the host device has a lower read and write speed than the Compact Flash card, so the end result is that the Compact Flash card cannot operate at its best performance level. A good example of this is that a device may only support 10X read speeds, so using a 45X or faster Compact Flash card will not improve performance. Most host devices do not have clearly documented Flash card interface read or write speeds, so it may be difficult to know your host device's exact capabilities.That is why I am asking: What is the reading speed of compact flash interface for DM7025 ? The answer to this question will help us to choose the exact (or best or optimum) speed of our Compact Flash card.
    Thanks to all of you.
    mohamedyh