Thanks for that info Todd. I'm in the process of specing out a new HD capable frontend, and the hardware I'm looking at is very similar to yours. My big question, though, was to confirm that an Athlon64 can playback HD content smoothly without XvmC - and from what you stated it looks like that answer is yes. (I assumed it could, but it seems like people generally have a tougher time with HD on the AMD chips vs. Intel - at least that's my perception)
On 11/17/05, Robert Tsai < [EMAIL PROTECTED]> wrote:On Thu, Nov 17, 2005 at 03:43:52PM -0800, Todd Ignasiak wrote:-----BEGIN PGP SIGNATURE-----
> I have seen several reports of performance expectations with the
> various MPEG decoders, and what I am seeing is not exactly what
> other people have seen, so I wanted to start a discussion here.
> Also, I thought others might be interested in the performance
> numbers from a typical system (if anyone has performance info from
> other CPUs, or Unichrome XvMC, please post)..
>
> The main unexpected issues I see are:
> - libMPEG2 uses much more CPU than the Standard decoder on my system.
> (libmpeg2:80%, Standard: 50%, XvMC: 28%). The 'help' info in the
> GUI, and several posts here, say that libMPEG2 should be have lower
> CPU requirements. Perhaps this is an x86-64 issue.
You're confirming what other people have reported on other 64-bit
systems (ffmpeg a.k.a. "standard" is more CPU-efficient):
http://www.gossamer-threads.com/lists/mythtv/users/127168
--Rob
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I can successfully play HD content without XvMC on my AMD64 3800+. Keeping it both cool and quiet is another issue. In fact, I finally went to a water cooler when the heat sink and fan couldn't cut it.
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