[mythtv-users] CPU not enough to drive 1080P? Core2duo
Michael T. Dean
mtdean at thirdcontact.com
Thu Feb 7 18:36:16 UTC 2008
On 02/07/2008 12:21 PM, aaron wrote:
> On 2/7/08, Michael T. Dean <mtdean at thirdcontact.com> wrote:
>> My GeForce 4 MX 440 drives full 1080p.
> This might be asking the obvious, but it's all the "other stuff" ---
> such as main CPU power --- that determines how well 1080p content (or
> HD in general) will play, right?
Right. XvMC can only do so much for you, and it doesn't take much of a
video card (by today's standards) to do XvMC for HDTV. NVIDIA's drivers
and cards have all done both iDCT and MC for XvMC since before the
GeForce 4 generation, so any from there up would work ('til you get to
the GeForce 8 generation, which drops XvMC support).
> Am I correct in my understanding that the 440MX will support XvMC?
Yep. Though I wouldn't recommend using it. See
http://www.gossamer-threads.com/lists/mythtv/users/313381#313381 . That
user was trying to save money. If you don't already have an MX440,
you're better off with a 5200 or a 6200 or so. My last purchase was a
6200 (I'm not using the MX440, anymore) because the MX440 has been
EOL'ed and the legacy drivers were broken (caused segfaults when playing
Flash, i.e. at YouTube or Google video--not that I ever use them, but
long story, so nevermind). Instead of buying a 5200 (whose generation
is next on the chopping block), I bought a 6200 to "skip" one EOL (I hope).
> pretty sure I'll need that to have a hope in heck of playing any HD on
> my system --- once I finally get my a TV. I've got an AthlonXP 2800+.
I think you're right about that. I know my XP 2400+ backend can't come
anywhere near real-time playback of HDTV. It can take as much as 2:1 to
just commflag the HDTV it records.
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