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is Latitude XT capable of H.264 HW decoding?

Discussion in 'Dell Latitude, Vostro, and Precision' started by cowgaR, Nov 23, 2009.

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  1. cowgaR

    cowgaR Notebook Enthusiast

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    Hi there,

    I've searched the forum and didn't find anything relevat.
    I'm thinking about buying XT tablet (not XT2) as a gift and would like to know if it is able to play fluently 1080p movies encoded with H.264 codec (usually stored in .mkv container), so any user of this tablet would be welcomed to answer.

    specs (PDF)
    http://www.dell.com/downloads/global/products/latit/en/latit_xt_specsheet.pdf
    Intel® Core™ 2 Duo ULV U7700 (1.33GHz, 533Mhz)
    ATI® Integrated Graphics Radeon Xpress 1250


    as I understand, it should have AMD M690 chipset:
    http://www.amd.com/us/products/notebook/chipsets/amd-m690/Pages/amd-m690-chipset-specs.aspx
    with MPEG-4 decode support

    and Ati X1250 video chip:
    http://www.amd.com/us/products/notebook/chipsets/radeon-xpress-1250/Pages/ati-radeon-express-1250-intel.aspx

    The Radeon Xpress 1250 is the first chipset to support ATI's revolutionary Avivo™ display and video architecture, producing the most vibrant images and smoothest video playback ever seen in this class of product...



    correct me if I am wrong.
    What I found is the video chip isn't particularly strong, GPU comparison here:
    http://www.notebookcheck.net/ATI-Radeon-Xpress-X1250.6946.0.html

    and in all 3 articles I found they can't say it clearly wheter it can or can't decode 1080p movies played from HDD correctly (I don't care about Blu Ray as it doesn't have optical drive).
    http://www.engadget.com/2007/02/28/amd-integrates-ati-radeon-x1250-into-vista-certified-690-chipset/
    there in the comments:

    The X1250 does NOT support HD-DVD or Blu-ray decoding. The GPU core is just not fast enough to handle the H.264 off loading and as such I feel the HDMI and HDCP support is really just fluff.



    http://www.pcper.com/article.php?type=expert&aid=370&pid=2

    anandtech is saying it's ok
    http://www.anandtech.com/showdoc.aspx?i=3072&p=17

    This is all old info, so If I upgrade to newest drivers, is there any chance I'm able to play 1080p movies with 1,3GHz CPU and this video card?

    thanks for any response
     
  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    The ATI 1250 GPU is about 3 years old and predates widespread support for the H.264 standard. The processing load for decoding H.264 is therefore likely to fall on the CPU which will struggle.

    John
     
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