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    M11X CUDA Video conversion

    Discussion in 'Alienware' started by psikey, Apr 22, 2010.

  1. psikey

    psikey Notebook Guru

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    Just some feedback on a CUDA video transcoding test I did today.

    Taking a 9,500 kbps 1080p MKV rip of my Transformers 2 Bluray, I tried out the freeware CUDA capable MediaCoder to re-encode it to 6,000 kbps purely as a trial.

    Conversion as a 1080p h264, 5.1DD AC3 320kbps audio all in an mt2s (AVCHD) file. Using Average Bitrate for video as MediaCoder does not currently support 2-pass with CUDA.

    The OC SU7300 CPU shows a transcoding speed of 1.2fps which as expected is very slow. Think on my E6750 2.67 GHz C2D I get around 4-9fps but thats with a different piece of software (not MediaCoder).

    With the M11X GT 335M GPU CUDA encoder the speed jumps massively to 16.8fps Better than using my Desktop with its low ATI 3650 GPU.

    Usually use RipBOT on my desktop so need to see how quality compares on my HDTV.

    My M11X has 4GB RAM & Intel X25-M SSD (not sure if these make any difference over base spec.)

    Also, lots of settings in MediaCoder so I'm sure I've not found the optimal settings, but does show the massive performance increase using the GPU over CPU with our little M11X's.


    Strange thing is that GPU-Z only shows GPU loaded 51% max during CUDA with CPU at ~80%. Maybe CUDA doesn't utilise the full GPU load ??
     
    psikey, Apr 22, 2010
    #1