[mythtv-users] Accuracy of HDTV processor requirements statement in HOWTO

[Robert Kulagowski]

 From the HOWTO:

"
To playback HDTV content, plan on a powerful CPU.  "How powerful?" 
depends on a number of factors, such as the capture resolution, whether 
the video is progressive or interlaced, and whether your display card 
has hardware-assist support for Linux. For 720p content (1280x720), a 
2.4GHz P4 should be sufficient.

For 1920x1080i->1920x1080p with the better deinterlacing methods
done in real time a 2.4GHz CPU is taxed, but should work if you use "Bob 
and Weave" deinterlacing, or if you have an NVIDIA card with MPEG-2 
hardware acceleration.  If you enable the hardware acceleration, you may 
be able to use a 1.8GHz processor.
"

I'm looking for feedback from people that are running HDTV with 
lower-end processors; I've got a 2.4Ghz HT P4, nvidia 7676 and a 1080i 
program with XvMC still surges:  about 2 seconds of regular speed, then 
a micropause of about .5 seconds, then repeat; not sure if this is tied 
into trac bug #1219 or if it's CPU bound.  I'm even more concerned with 
the statement that a 1.8Ghz should be good enough.