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<blockquote data-quote="Tech Geek" data-source="post: 40691" data-attributes="member: 18181">Lower end cards have pleanty of bandwidth for HDTV.&nbsp; That isn't the problem.&nbsp; It's the way Microsoft's recording engine works and VMR9 that are the problem.&nbsp; Their software is very prone to dropping frames and stuttering.&nbsp; There are all sorts of inefficient ways of dealing with the video that could result in taking 4 or more times the memory bandwidth that WatchHDTV requires.If they are buffering decoded video they have to send the video stream to the card for decoding and recieve the decoded video back.&nbsp; On top of that a card has to have the memory bandwidth to scale and deinterlace the image.&nbsp; &nbsp; Add some inefficient code and the card suddenly has to do all that in a very short period of time.&nbsp; It's not the continous bandwidth that is the issue, it's the peak bandwidth.I have no doubts that Microsoft could cut that number by 1/3 without much work at all.&nbsp; But they would rather spend a lot of time on DRM and other things that consumers don't want because it makes them money and gives them control.</blockquote>

[QUOTE="Tech Geek, post: 40691, member: 18181"] Lower end cards have pleanty of bandwidth for HDTV. That isn't the problem. It's the way Microsoft's recording engine works and VMR9 that are the problem. Their software is very prone to dropping frames and stuttering. There are all sorts of inefficient ways of dealing with the video that could result in taking 4 or more times the memory bandwidth that WatchHDTV requires. If they are buffering decoded video they have to send the video stream to the card for decoding and recieve the decoded video back. On top of that a card has to have the memory bandwidth to scale and deinterlace the image. Add some inefficient code and the card suddenly has to do all that in a very short period of time. It's not the continous bandwidth that is the issue, it's the peak bandwidth. I have no doubts that Microsoft could cut that number by 1/3 without much work at all. But they would rather spend a lot of time on DRM and other things that consumers don't want because it makes them money and gives them control. [/QUOTE]

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