[mythtv-users] CPU power for digital tuners

Tom Walsh tom at openhardware.net
Thu Jul 8 16:07:56 EDT 2004

Dylan Egan wrote:

> Hi,
> Im looking to build a quiet nice digital TV server, currently got 1 
> card, 2000+ XP and 512 RAM.
> Now if im looking at at least 3 cards, what should my CPU and RAM be 
> to match? This is for recording and streaming, no playback on this 
> machine. It will only have mythtv running on it, nothing else. Mythweb 
> will be running on the other server.
> I currently just record normal SDTV, if I were to start HDTV what 
> should I be looking at? And is it best to compile XvMC support on an 
> FX5200 for HDTV playback? Or is MythTVs HDTV support a bit sloppy at 
> the moment? I ran kaxtv and it runs alright, but trying the same 
> channel on myth it just is slow.
> Dylan.
Just a note on the three cards, I assume you're talking about PVR 
(hardware mpeg encoders) style of cards???   If you are, I would caution 
you about that.  I attempted to run three PVR-250MCEs with a 2.6.7 
kernel, ivtv-0.1.10-pre2-ck97k and NVIDIA*run.pkg proprietary drivers 
for a GeForce4 440MX video card.  It would not work, the nvidia driver / 
ivtv driver would collide and the video card would not work properly (X 
refused to find usable screens).

I could run two PVR250MCE cards, but not three.  Yes, I did try serveral 
nvidia drivers including the "NVIDIA-Linux-x86-1.0-4363.run" to no 
avail.  The problem doesn't seem to appear to be an NVIDIA issue, as I 
was able to run three cards in my 2.4.x system.


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Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net, http://cyberiansoftware.com
"Windows? No thanks, I have work to do..."

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