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<blockquote data-quote="dman_lfc" data-source="post: 63884" data-attributes="member: 10331"><p>Tech Geek, good post.</p><p></p><p>Working HDTV spec for your benchmark...</p><p></p><p>Intel P4 3.0GHz (530 Prescott)</p><p>Intel 945 GTP chipset</p><p>XFX 7600GS Extreme Edition PCIe GFX card (256mb)</p><p>512MB DDR2 memory (PC4300)</p><p>2x Samsung SATA 150 drives.</p><p></p><p>With the rig above I can easily decode H.264 720p streams.</p><p>However with 1080p the CPU struggles and sits in the late 80's early 90's.</p><p></p><p>BBC HDTV World Cup coverage struggled as according to my understanding it's 1080i High 10 Profile with MBAFF at level 4 so 20Mb/s - some serious broadcasting bandwidth.</p><p></p><p>Note: On all H.264 tests I used the Cybelink H.264 decoder which uses the Nvidia PureVideo technology. Any other codec, even CoreAVC causes the CPU to constanly be at 100% on 1080p and unwatchable.</p><p></p><p>You may want to mention Nvidia's PureVideo technology in your post which does help.</p><p>Also that in some HDTV braodcasts are MPEG-2 and require less resources compared to an equivalent H.264 stream. HDTV H.264 decoding is the killer.</p><p></p><p>As for decoding HDTV Satellite streams a good guide to available European HDTV streams is available here...</p><p><a href="http://en.kingofsat.net/hdtv.php" target="_blank">http://en.kingofsat.net/hdtv.php</a></p><p>So for example to decode Sky HD on 28.2 degrees East you would need a Twinhan DVB-S2 card with a CI interface. Then a Dragon CAM and Sky HDTV subscription card to get a working solution. People can forget 2x cards and recording of these streams ;-)</p><p></p><p>On another note you may want to highlight the case will need serious airflow. I've got that all packed into a SilverStoneTek LC11M and the CPU cooler sounds like a vacum cleaner. Not ideal at all.</p><p></p><p>I have some HDTV samples which might be beneficial in peoples rig testing however I have no web space to host them. Let me know if you want them.</p><p></p><p>DMAN</p></blockquote><p></p>
[QUOTE="dman_lfc, post: 63884, member: 10331"] Tech Geek, good post. Working HDTV spec for your benchmark... Intel P4 3.0GHz (530 Prescott) Intel 945 GTP chipset XFX 7600GS Extreme Edition PCIe GFX card (256mb) 512MB DDR2 memory (PC4300) 2x Samsung SATA 150 drives. With the rig above I can easily decode H.264 720p streams. However with 1080p the CPU struggles and sits in the late 80's early 90's. BBC HDTV World Cup coverage struggled as according to my understanding it's 1080i High 10 Profile with MBAFF at level 4 so 20Mb/s - some serious broadcasting bandwidth. Note: On all H.264 tests I used the Cybelink H.264 decoder which uses the Nvidia PureVideo technology. Any other codec, even CoreAVC causes the CPU to constanly be at 100% on 1080p and unwatchable. You may want to mention Nvidia's PureVideo technology in your post which does help. Also that in some HDTV braodcasts are MPEG-2 and require less resources compared to an equivalent H.264 stream. HDTV H.264 decoding is the killer. As for decoding HDTV Satellite streams a good guide to available European HDTV streams is available here... [url]http://en.kingofsat.net/hdtv.php[/url] So for example to decode Sky HD on 28.2 degrees East you would need a Twinhan DVB-S2 card with a CI interface. Then a Dragon CAM and Sky HDTV subscription card to get a working solution. People can forget 2x cards and recording of these streams ;-) On another note you may want to highlight the case will need serious airflow. I've got that all packed into a SilverStoneTek LC11M and the CPU cooler sounds like a vacum cleaner. Not ideal at all. I have some HDTV samples which might be beneficial in peoples rig testing however I have no web space to host them. Let me know if you want them. DMAN [/QUOTE]
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