Re: HDTV stuttering


"Curious" <curious@xxxxxxxxxx> wrote in message
news:uZByG4rdFHA.720@xxxxxxxxxxxxxxxxxxxxxxx
> You should use the 72.14 MCE drivers from the NVIDIA Website (suggest you
> also download the display users manual from the same download page),
> especially since these drivers support NVIDIA Pure video functionality
> when used with a 6600 card and the 1.0.67 DVD Decoder.
> Your stuttering problem should be eliminated since the graphics processing
> power of the 6600 GT far exceeds that of the 9550.

Unfortunately, the 6600 which he states that he bought, does not meet the
minimum requirement for memory bandwidth as required by Microsoft. The base
PCI-X 6600 has a memory bandwidth of 8.8GB/s while HDTV throught Media
Center requires 10GB/s. The AGP version is slightly slower.

It is possible that this is the cause of the problem. If the card works
correctly on normal TV and the drivers being used are known to be stable, I
would suspect the graphics card. If you can playback the recorded HDTV
through MediaPlayer with no stuttering, then I would be almost certain that
the problem is memory bandwidth.

I have been able to use an NVIDIA GeForce FX 5500 for HDTV which has a
memory bandwidth of 6.6GB/s, but I was getting random crashes, stuttering,
digital artifacts on the screen and other little problems similar to the OP.
Upgrading to a 5900 SE with a bandwidth of 22GB/s cured all of the problems.

I'll be testing an XFX 128MB 6800 card soon that retails for just over $200.
For the money, it appears to be a good multi-purpose card for MCE and
gaming.

-Pete


.

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