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Which power must be a cpu for HD 1080p?

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  • Which power must be a cpu for HD 1080p?

    I would like known, in the eventuality is impossible use driver open for a fluent display of video hd 1080p, which power must be a cpu for this task.

    Thanks.

  • #2
    Depends on the bitrate you want to decode and how good the codec can work multithreaded. mplayer default only uses 1 core, you would need the mt git branch. In general you should not buy cpus with less than 3 ghz dual (2.93 is also ok). A fast dual is certainly better than a lower clocked quad for simpler codecs.

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    • #3
      Thanks.

      What about a 17 Mbps as bitrate?

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      • #4
        A Phenom II can play BluRay rips without any problems, even on a single core. It runs into trouble with some really heavy stuff (like the infamous birds sequence). If you get a multi-core mplayer, most modern dual-core processors will be fine.

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        • #5
          Good.

          Thanks.

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          • #6
            My Athlon II 235e (2.7 Ghz dual) handles 15-18 mbps 1080p video just fine. If you can use multithreading, a 605e (2.3 Ghz quad) will play more or less any video out there.

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            • #7
              Good.

              I have two old amd processor so i can see only 720p video (while 1080p,even local on hdd aren't perfect), when i play some video (i'm using debian squeeze 64 bit) and I take a look at top I don't see difference in the use of the processors between mplayer-mt and mplayer.
              I have something as:
              85 % first core
              25 % second core
              Is it normal?

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              • #8
                No, it isn't. Usually there should be a core which is slightly more used than the others (the one that also runs Xorg, for example) and the other more ore less similar. So, in your case, 55% and 45% would seem reasonable. Have you tried using ffplay directly? Just a thought.

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                • #9
                  Also (can't edit) I'm not sure whether mplayer-mt will automatically use all your cores. Maybe you have to tell it explicity.

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                  • #10
                    No it does not. My script has got some examples at the end:

                    http://kanotix.com/files/fix/mplayer...t-snapshot.txt

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