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    m1330 (8400m GS) CUDA performance

    Discussion in 'Dell XPS and Studio XPS' started by bgbop15, Dec 19, 2008.

  1. bgbop15

    bgbop15 Notebook Enthusiast

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    Just installed the new Nvidia Drivers 179.28 to see if CUDA performance was worth it on this laptop, and it's a big fat NO....

    BTW I have an m1330 with newest bios (A14), T7500 (2.2ghz), and 2gb RAM

    Using TMPGEnc 4.0 Xpress to encode a 1080p/30p AVCHD video into a 720p divx took 30minutes and 34 seconds with CUDA on, and 29 minutes with CUDA off.

    I thought maybe CUDA would be better at encoding AVC video, so I encoded the same 1080p/30p video into an MPEG4 AVC file and it took 1hr51min with cuda on and 1hr30min with CUDA off.

    Looks like m1330 owners are just going to be heating up their GPUs for no reason :(
     
    bgbop15, Dec 19, 2008
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  2. v_c

    v_c Notebook Evangelist

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    They have been using high-end desktop GPUs in most benchmarks to show the % increase compared to CPU alone.

    You might be looking at 500-1000GFLOPS for a high-end desktop GPU, versus 10-20GFLOPS for a 8400M

    If TMPGEnc are claiming 200-400% increase using a GTX260, then obviously you're going to see almost nothing with a lowly 8400M.
     
    v_c, Dec 19, 2008
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  3. bgbop15

    bgbop15 Notebook Enthusiast

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    well not OBVIOUSLY.... i'm sure there are more idiots like me whole spent the whole day running benchmarks on their 8400m's !

    my desktop's 8800gt is converting videos much faster now though!
     
    bgbop15, Dec 19, 2008
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  4. 7oby

    7oby Notebook Evangelist

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    TMPGEnc only uses "CUDA" for decoding videos. And I think even only for MPEG-2:
    http://tmpgenc.pegasys-inc.com/en/product/te4xp.html#tabs

    Sad it doesn't perform well on GeForce 8400M GS.

    Badaboom is a transcoder that facilitates the encoding stage:
    http://www.anandtech.com/video/showdoc.aspx?i=3475

    However Badaboom is only useful for transcoding movies to iPhone format. Okay, version 1.1 will be more useful.

    There's a third CUDA application. DGAVCDecNV:
    http://neuron2.net/dgavcdecnv/dgavcdecnv.html
    This one speeds up the decoding of H.264 videos for transcoding purpose. However it requires Avisynth compatible tools and some knowledge how to use them.

    Maybe some of the links are helpful.
     
    7oby, Dec 19, 2008
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