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<blockquote data-quote="knutinh" data-source="post: 104884" data-attributes="member: 14776"><a href="http://www.anandtech.com/video/showdoc.aspx?i=2886" target="_blank">http://www.anandtech.com/video/showdoc.aspx?i=2886</a>&quot;Our first glimpse of the processing power required to play HD content on the PC gave us a very good indication that Blu-ray movies using MPEG-2 should have no problem on a modern system, even without GPU acceleration. The Core 2 Duo E6300 is easily capable of playing back 50-60 Mbps MPEG-2 video at 1080p. Adding a GPU to the mix did make an impact, but the small boost in performance just wasn't necessary. Today we will turn the tables around and look at what happens when H.264/MPEG-4 AVC meets Blu-ray on the PC. This combination is much more demanding than MPEG-2 encoded Blu-ray movies, as H.264 is capable of much higher compression at better quality which requires more processing power. ...The bookmark feature really helped out, allowing us to easily jump to the specific scene we wanted to test in Chapter 18. In this scene, the Golden Gate is being torn apart and people are running everywhere. This is one of the most stressful scenes in the movie, reaching a bitrate of over 41 Mbps at one point. &quot;<img src="http://images.anandtech.com/graphs/bluray%20h264%20playback_12110691253/13668.png" alt="" class="fr-fic fr-dii fr-draggable " style="" />The peak cpu usage for this HD-DVD title should be quite accurate for estimating cpu use for other applications as well, since it has a peak bitrate of 41mbps h264 for 1080p24 content. When the cpu usage reaches peak, the user will probably notice a frame-drop or slow-down. I am guessing that most broadcast material will be CBR and far lower than 41mbps.Also, for HD-DVD content you have to do decryption, and the playback tools/codecs are probably not fine-tuned yet.-k</blockquote>

[QUOTE="knutinh, post: 104884, member: 14776"] [url]http://www.anandtech.com/video/showdoc.aspx?i=2886[/url] [i]"Our first glimpse of the processing power required to play HD content on the PC gave us a very good indication that Blu-ray movies using MPEG-2 should have no problem on a modern system, even without GPU acceleration. The Core 2 Duo E6300 is easily capable of playing back 50-60 Mbps MPEG-2 video at 1080p. Adding a GPU to the mix did make an impact, but the small boost in performance just wasn't necessary. Today we will turn the tables around and look at what happens when H.264/MPEG-4 AVC meets Blu-ray on the PC. This combination is much more demanding than MPEG-2 encoded Blu-ray movies, as H.264 is capable of much higher compression at better quality which requires more processing power. ... The bookmark feature really helped out, allowing us to easily jump to the specific scene we wanted to test in Chapter 18. In this scene, the Golden Gate is being torn apart and people are running everywhere. This is one of the most stressful scenes in the movie, reaching a bitrate of over 41 Mbps at one point. "[/i] [img]http://images.anandtech.com/graphs/bluray%20h264%20playback_12110691253/13668.png[/img] The peak cpu usage for this HD-DVD title should be quite accurate for estimating cpu use for other applications as well, since it has a peak bitrate of 41mbps h264 for 1080p24 content. When the cpu usage reaches peak, the user will probably notice a frame-drop or slow-down. I am guessing that most broadcast material will be CBR and far lower than 41mbps. Also, for HD-DVD content you have to do decryption, and the playback tools/codecs are probably not fine-tuned yet. -k [/QUOTE]

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