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Message: <blockquote data-quote="DucaSP" data-source="post: 424541" data-attributes="member: 92129">UVC and post processing are different animals.... UVD is the marketing name for ATI's DXVA implementation, as PureVideoHD is the marketing name for nVidia's DXVA implementation.The problem with 780G chipset (as well as whith Geforce 8200 and 8300 solutions) is that the memory access is performed by the CPU itself, not the chipset, thus, those chipsets have to use Hyper Transport to request memory access to the CPU. The other problem (this is 780G and 790GX exclusive, as Geforce 8200 and 8300 doesn't use any kind of dedicated memory) is that even when you have that 128MB of dedicated memory, it simply is not enough for DXVA + Post Processing. So, you really need to access the main memory, and here is the catch...When you are using an Athlon 64, Athlon X2 or Sempron, the Hypertransport bus speed is not fast enough to allow those graphics chipsets to do DXVA for HD videos and Post Processing at the same time... This is not a problem for progressive content at all, but if we are talking about interlaced content, it won't be de-interlaced at all when using DXVA in such platform, and believe me, that sucks... HD TV in Brazil is mostly based on 1080i content, and even what is not natively 1080i, television networks "upsample" it to 1080i. I have some friends that were using 780G + Athlon X2 and were complaining about image quality.Altough, for all those chipsets, there is a simple work-around... Upgrade your CPU to a Phenom or a Phenom II. Both CPU's have speedier Hyper Transport BUS speeds and they are able to perform post processing on HD Video using above mentioned chipsets. Some other people tried to overclock HyperTransport BUS speed on their Athlon X2 CPU's and got it working, but, it seems that you need to mess with registry hacks to unlock post processing in such cases.Please don't contact me asking how to do that, I don't even own an AMD CPU so I really don't know the details, all I know is because I've built a HTPC for me and did a lot of research before choosing parts, to make sure that whateve I was buying would please me. I'm pretty sure that some google research on the subject for those willing to overclock Hyper Transport BUS speeds and mess with registry changes will yeld good results, altough, overclocking is a dangerour game unless you know what you are doing, and registry hacks are not always guaranteed to work as long as drivers progress (this is a nice way of AMD telling people "go buy some Phenom's, they're cheaps today, we have some Phenom's almost as cheap as some X2's").</blockquote>

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