Trying to buy r9 280x graphics card and have a question.

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merle van osdol
merle van osdol
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28 Aug 2015 12:51:09 UTC
Topic 198209
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    trying to buy r9 280x graphics card and have a question.

    One card says 256bit the other says 384bit. Does this refer to the data transfer rate within the card or to a transfer rate to the motherboard? If it's just within the card I don't have to worry about compatibility to my MoBo.
    Thanks

    merle

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    Sasa Jovicic
    Sasa Jovicic
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    Trying to buy r9 280x graphics card and have a question.

    28 Aug 2015 13:00:45 UTC
    Message 133375
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      The 384-bit is much, much faster.

      merle van osdol
      merle van osdol
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      RE: The 384-bit is much,

      28 Aug 2015 13:05:55 UTC
      Message 133376 in response to message 133375
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        Quote:
        The 384-bit is much, much faster.


        Thanks but do I need to worry about compatibility to MoBo?
        I have an older r9 280x vapor-x that I bought last year and I assume it's something less than 384-bit.

        merle

        What is freedom of expression? Without the freedom to offend, it ceases to exist.

        — Salman Rushdie

        Bill592
        Bill592
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        Howdy Merle, That refers to

        28 Aug 2015 13:45:12 UTC
        Message 133377 in response to message 133376
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          Howdy Merle,
          That refers to the "Memory Bus Width" of the card.
          It won't affect motherboard compatibility.

          As far as I know - ALL 280X's are 384bit.

          the slower 270X is 256bit.

          also - the older 7970 gigahertz edition is basically
          the same as the 280X. (they just re-named it )

          Bill

          merle van osdol
          merle van osdol
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          RE: Howdy Merle, That

          28 Aug 2015 13:54:16 UTC
          Message 133378 in response to message 133377
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            Quote:

            Howdy Merle,
            That refers to the "Memory Bus Width" of the card.
            It won't affect motherboard compatibility.

            As far as I know - ALL 280X's are 384bit.

            the slower 270X is 256bit.

            also - the older 7970 gigahertz edition is basically
            the same as the 280X. (they just re-named it )

            Bill

            Thanks Bill

            merle

            What is freedom of expression? Without the freedom to offend, it ceases to exist.

            — Salman Rushdie

            ExtraTerrestrial Apes
            ExtraTerrestria...
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            Bill is right. In addition:

            6 Sep 2015 15:39:38 UTC
            Message 133379
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              Bill is right. In addition: the 256 bit card you saw may have been a R9 285 based on the Tonga GPU. It's got the smaller memory bus and fewer shaders, so it's in every crunching-related aspect worse than a R9 280X. Even the R9 280 probably performs better at Einstein, as it still has the 384 bit bus.

              MrS

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