[mythtv-users] VDPAU, CPU and deinterlacers

[jedi]

On Mon, Sep 28, 2009 at 08:57:19PM +0200, Jongi wrote:
> On Mon, 28 Sep 2009 20:01:16 +0200, Raymond Wagner <raymond at wagnerrp.com> 
> wrote:
>
>> On 9/28/2009 13:39, Victor wrote:
>>> Got a new frontend working with a IGB 8200. Initially it had a dual
>>> core AMD 7750 and everything looked good with Advanced 2x
>>> deinterlacers and all.
>>>
>>> Then I swapped the CPU with a Sempron LE-1250 and now the only
>>> deinterlacer that works decent is one-field, all the others stutter
>>> but CPU load never goes above 20%.
>>>
>>> Is this a hardware limitation on VDPAU?, do we still need to put high
>>> end n-core CPUs in our frontends?
>>>
>> The deinterlacers in VDPAU are all performed on the shader hardware on  
>> the GPU.  Changing the CPU will have no effect on their performance.   
>> Furthermore, the 8200IGP has insufficient power to do advanced 2x on HD 
>> material.
>>
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>
> This was something I was going to ask. As I had been thinking of either  
> upgrading my CPU (Athlon64 X2 5200) to an X3; or Video card (IGP8200) to  
> 9500GT. This confirms that the 9500GT route is what I should do.

    Extra cores won't help for video decoding at this point. Generic
decoding isn't multithreaded (yet). So you're better off with fewer
faster cores than more slower ones.

    On that box I would go with the 9500GT.