video memory - X

This is a discussion on video memory - X ; How can I find out how much memory is provided by a running video card? Or, how can I calculate how much video memory is needed to run at 1600x1200 resolution with color depth 24? Bob T....

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Thread: video memory

  1. video memory

    How can I find out how much memory is provided by a running video card?
    Or, how can I calculate how much video memory is needed to run at
    1600x1200 resolution with color depth 24?

    Bob T.

  2. Re: video memory

    Bob Tennent wrote:
    > How can I find out how much memory is provided by a running video card?


    Look in the file /var/log/XFree86.0.log (or /var/log/Xorg.0.log,
    depending on which server you're running) for a line with the
    word "VideoRAM" in it.

  3. Re: video memory

    On Sun, 03 Oct 2004 13:26:31 +0000, Bob Tennent wrote:

    > How can I find out how much memory is provided by a running video card?
    > Or, how can I calculate how much video memory is needed to run at
    > 1600x1200 resolution with color depth 24?
    >
    > Bob T.


    To calculate how much memory - 1600x1200x24/8 = 5760000 or about 6mbytes.


  4. Re: video memory

    "ray" wrote:

    >On Sun, 03 Oct 2004 13:26:31 +0000, Bob Tennent wrote:
    >
    >> How can I find out how much memory is provided by a running video card?
    >> Or, how can I calculate how much video memory is needed to run at
    >> 1600x1200 resolution with color depth 24?

    >
    >To calculate how much memory - 1600x1200x24/8 = 5760000 or about 6mbytes.


    Note, however, that virtually every X driver runs its depth 24 modes with
    32 bits per pixel, so that would actually be 1600x1200x32/8 or 7,680,000
    bytes.
    --
    - Tim Roberts, timr@probo.com
    Providenza & Boekelheide, Inc.

  5. Re: video memory

    begin Tim Roberts dedi ki:
    > "ray" wrote:
    >>On Sun, 03 Oct 2004 13:26:31 +0000, Bob Tennent wrote:
    >>
    >>> How can I find out how much memory is provided by a running video card?
    >>> Or, how can I calculate how much video memory is needed to run at
    >>> 1600x1200 resolution with color depth 24?

    >>
    >>To calculate how much memory - 1600x1200x24/8 = 5760000 or about 6mbytes.

    >
    > Note, however, that virtually every X driver runs its depth 24 modes with
    > 32 bits per pixel, so that would actually be 1600x1200x32/8 or 7,680,000
    > bytes.


    Also note that many drivers recommend and work much faster in color depth
    16. I would suggest depth 16 by default, if there's no compelling reason.
    Even then, reading driver's docs before going 24 bit depth might be a good
    idea.

    --
    Abdullah | aramazan@ |
    Ramazanoglu | myrealbox |
    ________________| D.0.T cm |__

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